Gold from California arrived in New York; some was forwarded to Philadelphia for coin minting. The growing gold shipments intensified an old dispute over where the metal should be minted: Should New York only receive and process the metal, or should it also mint coins locally? [3] [4] [6]
The planned branch mint of the United States Mint was never built. Instead, the New York Assay Office opened in Manhattan in 1854. It accepted, tested, and processed precious metals. The presses for the coins produced from these metals remained in Philadelphia.
What remains of a mint when its operations cease—or when it never even progresses beyond the planning stage? This question connects the stories of the Pobjoy Mint and the historic Oom Paul coin press with New York. Even the mint plans left their mark there. The actually operating Assay Office added its own story.
Short answer: What was the New York Assay Office?
The New York Assay Office was a government-run receiving, testing, and processing facility for gold and silver in Manhattan. It received its legal mandate on March 3, 1853, and opened on October 10, 1854. The office produced bars but not U.S. coins; metal intended for minting went to Philadelphia. The repeatedly requested establishment of a mint in New York City was never realized. The United States Mint operates the Assay Office from 1854 to 1982. [2] [3] [11]
Why New York wanted to mint its own incoming gold
For a trading center, precious metals could only be used conveniently once their weight, purity, and value were established. Gold dust and foreign coins had to be examined and, if necessary, reworked. Anyone who had sold their goods for metal needed a reliable means of payment as quickly as possible. The desire for a New York mint was therefore closely linked to the question of where traders could process their deliveries.
Mint director Robert M. Patterson spoke out against New York’s mint plans as early as December 1845. He pointed to Philadelphia’s capacity and the cost of an additional operation. The debate thus began even before the California Gold Rush. [4]
The gold from the West intensified the issue. On December 5, 1848, President James K. Polk again recommended to Congress the establishment of a branch mint in New York City. He explicitly justified its increased importance by citing the precious metal deposits in the newly acquired territories, especially California. New York’s request thus had support at the highest political level. Congress would have to decide on its establishment and its financing. [5]
Among the proponents was New York State Representative J. Phillips Phoenix. In his speech of January 31, 1851, he demanded that incoming gold be minted where it was needed for trade. He associated the onward transport to Philadelphia with a loss of time, costs, and disadvantages regarding the use of receipts. For him, a local mint was primarily a matter of New York’s economic standing. [6]
These statements reveal more than just a dispute over transportation costs. New York wanted to reflect its importance as a trading center by establishing its own mint. Patterson countered by emphasizing the efficiency of the existing operation in Philadelphia. Behind the question of the economic viability of another mint lay the question of which city should assume this governmental responsibility. [4] [6]
In 1850 and 1851, demands were transformed into concrete coinage plans.
A bill introduced in the Senate in 1850 proposed the production of gold, silver, and copper coins. $225,000 was to be allocated for land, buildings, and machinery. The state was to exempt mint property from taxes. Thus, concrete plans regarding equipment and financing were already on paper. [4]
The city also participated in the preparations. Mayor Kingsland offered a site for the construction of a U.S. mint on December 26, 1851. The offer is recorded in Benjamin Perley Poore’s official publication catalog. [7]
The proposals concerned a mint in New York City. The facility that was later actually established on Wall Street in Manhattan received a different mandate: an assay office to handle local precious metal traffic.
In 1853, New York received an Assay Office instead of a Mint.
Patterson had already proposed such a solution to Representative Joseph R. Chandler on May 21, 1850. A collection point would be established in New York, while coin production would remain in Philadelphia. [4]
On March 3, 1853, New York City was granted an Assay Office through the Budget Act. Section 10 provided for the acceptance, smelting, refining, separation, and testing of gold and silver, as well as the casting of ingots. Metal destined for minting had to be forwarded to the Mint according to Section 11. The technical operations were under the authority of the Mint Director, subordinate to the Treasury. The Act initially allocated $100,000 for the establishment of the office. [2]
Consignors were to receive certificates of value, payable in coins in New York or at the Mint. Within 60 days, these certificates could also be used for payments to the United States at the Port of New York. In this way, the law linked the local precious metals service with the existing coin production. [2]
This division of tasks addressed a key concern of the trade: Anyone delivering precious metals to New York could have their value determined and settled there.
Opening on October 10, 1854
The Mint Director’s report of January 30, 1855, cites October 10, 1854, as the start of operations. By the end of the year, the New York office had received metal worth approximately $9.34 million at the time. Of this, approximately $6.36 million was earmarked for conversion into coins and was forwarded for minting. The report also indicates the production of tested and stamped fine bars. [3]
Why a New York mint encountered resistance in Philadelphia
The Assay Office did not resolve the political question. On February 27, 1860, Secretary of the Treasury Howell Cobb forwarded another bill for a New York branch mint to Mint Director James Ross Snowden. Snowden opposed the additional operation: Philadelphia could provide the necessary coinage, the rail connection was short, and a new building would be expensive. In his calculation of March 6, he estimated the cost of the establishment at $1.15 million. [8]
The correspondence contains a revealing correction. On March 10, Snowden admitted that he had initially misread the draft: it envisioned a separate facility next to the Assay Office. He subsequently adjusted his staffing plan. The New York project was thus intended to create an additional minting operation. Philadelphia’s Board of Trade published the correspondence, thereby making the objections from within the city public. [8]
Representative Thomas B. Florence of Pennsylvania also spoke out against the plans. On March 5, 1860, he called for the New York initiative to be thwarted. Together with Snowden’s objections and the publication by the Philadelphia Board of Trade, this clearly illustrates the location conflict: In Philadelphia, both the operational arguments against an additional mint and the interest in maintaining its own position found public advocates. [4] [8]
In 1882, the discussion centered on a new building with the possibility of minting coins.
A congressional hearing in 1882 addressed, among other things, the expansion of the Philadelphia Mint and the space problems of the New York Assay Office. Mint Director Horatio C. Burchard considered minting facilities in a sufficiently large new building in New York to be economically viable under certain conditions. He did not believe the existing location was suitable. Representative Waldo Hutchins also advocated for a mint in or near New York. [9]
Burchard’s conditional approval shows that the Mint’s management’s stance did not remain unchanged for decades. New premises and a different division of responsibilities could also lead to a different economic assessment. However, the points of contention remained the same: construction and operating costs, metal transportation, existing capacities, and the interests of the cities involved. The idea of establishing its own mint in New York City did not prevail in these efforts.
What remained of the New York Assay Office
The Assay Office developed a long and independent operational history. A 1970 announcement from the United States Mint mentions, in addition to refining gold and silver, the processing of silver certificate redemptions, silver recovery, and silver sales. The facility thus remained part of the government’s precious metals administration. The Mint’s historical site map lists its operations from 1854 to 1982. [10] [11]
A particularly vivid example is the marble facade of the former bank building on Wall Street, later used by the Assay Office. The Metropolitan Museum of Art attributes it to the architect Martin Euclid Thompson and dates it to 1822–1824. The facade was salvaged and reconstructed on the American Wing in 1924. Today it can be seen there in Gallery 700. It preserves a piece of the architecture of that trading place where precious metals were received and processed. [1]
Even daily operations left their mark. The National Archives hold records for the New York office, including assay registers for gold and silver deliveries from 1916 to 1955, as well as other assay documents from 1943 to 1959. Such records offer access to the company’s history that a preserved facade alone cannot provide. [12]
The immediate evidence of the office’s work is its gold bars. The Federal Reserve Bank of New York, in its description of the gold vault, explicitly mentions bars from the New York Assay Office. Markings can provide information about the melt, fineness, and manufacturer. Along with the facade and records, products of metalworking have also been preserved. [13]
What connects the Assay Office with gold coins of the 1850s
For collectors of American gold coins from the 1850s, this has a direct connection to their own collections. The gold from California changed the supply of gold to American mints. According to the Mint report, in 1854 the gold delivered to the mints and the Assay Office came almost entirely from domestic sources in California. At the same time, the report documents the transfer of New York deposits to Philadelphia for minting. [3]
The aforementioned $6.36 million in coin deposits illustrates the scale of this process in the Assay Office’s first few months of operation alone. Collecting Philadelphia gold coins from this era means engaging with a monetary system shaped by the California Gold Rush and by such transportation and processing routes. [3]
The history of such a coin therefore includes not only its design and minting, but also the procurement, testing, and processing of the metal. However, whether the gold of a particular piece actually passed through the New York Assay Office would need to be documented separately.
When referring to the location as New York, it’s important to distinguish between different institutions: West Point is located in New York State and is a separate facility. It opened in 1938 as a silver depot, began producing cents in 1973, and officially became a mint on March 31, 1988. The mint mark “W” first appeared on general circulation coins in 2019. These dates represent various milestones; none of them mark the opening of a mint in New York City. [14]
What can remain of a planned mint
Pobjoy’s legacy encompasses coins and minting techniques, while Oom Paul’s work focuses on a surviving press. New York adds another case to this series: the mint remained a project, but the debate surrounding it led to concrete proposals and decisions. The Assay Office assumed its own role in coinage and existed for over a century.
The facade points to Wall Street, the ingots to metal processing, and the congressional documents to the dispute between the trading center and the minting site. The gold coins of that era also belong in this context. Thus, more than just an unrealized idea remains of New York’s minting plans: the story of an enterprise that contributed to the production of coins without minting any itself.
Frequently Asked Questions
Were there plans for a US mint in New York City?
Yes. Evidence includes Polk’s recommendation of 1848, draft legislation, and Phoenix’s speech of 1851. Correspondence from 1860 and the hearing of 1882 show that the question recurred several times. [5] [6] [8] [9]
Was the New York Assay Office a mint?
It was part of the state minting and precious metals agency, but did not produce US coins. Its tasks included testing and processing precious metals and casting ingots. Metal destined for coinage was forwarded. [2] [3]
When was the New York Assay Office opened and closed?
The legal mandate dates from March 3, 1853, and operations began on October 10, 1854. The United States Mint cites 1982 as the last year of operation. The closure of the institution is distinct from the earlier replacement of its historic building. [2] [3] [11]
Where is the historic facade of the Assay Office preserved?
The salvaged marble facade belongs to the American Wing of the Metropolitan Museum of Art in New York. It is on display in Gallery 700; the collection entry explains its origin as the front of a bank building, which was later used by the Assay Office. [1]
Is the New York Assay Office the same as the West Point Mint?
No. The Assay Office was located in Manhattan. West Point is a different location in New York State where coins are produced. West Point was officially designated a mint on March 31, 1988. [11] [14]
About the author
Dirk Wasserthal is co-founder and managing director of Wasserthal RareCoin.Store. He specializes in modern numismatic gold coins, rare years, certified collector coins, and the history of their mints and markets.
Transparency and source basis
Wasserthal RareCoin.Store deals in rare modern gold coins. This article provides historical and numismatic context for the New York Assay Office and the New York Mint Plans. The examples given do not constitute a prediction of the future value of individual coins.
Sources and further documents
[1] The Metropolitan Museum of Art: Facade of the Second Branch Bank of the United States . Object AW.BankFacade; provenance, architect, dating 1822–1824, Assay Office use, reconstruction 1924 and exhibition location. Due to conflicting information in institutional retrospectives and in Belden, this article does not specify an exact demolition year.
[2] Act of March 3, 1853, Chapter 97, United States Statutes at Large, Volume 10. In particular, p. 209 and §§ 10–15, pp. 212–214: Authorization, commission, supervision and forwarding for minting.
[3] Report of the Director of the Mint, January 30, 1855. Submitted to Congress in February 1855; p. 2 documents the opening, deposits, ingot casting, and metal transfers in 1854. P. 3 lists the origin of the delivered gold. The New York transfers are not a reference point for a general percentage of all US gold coins of the 1850s.
[4] Bauman L. Belden: A Mint in New York, Numismatic Notes and Monographs No. 45, 1930. In the linked collection Nos. 42–49, especially pp. 1–9, 23–29, and 38–40. Belden’s transcripts of letters by Patterson and Florence were used, not the original manuscripts. The $225,000 is an estimate in the 1850 design, not actual construction costs. The coin proposals concern New York City or its surroundings; not every proposal specifies a location in Manhattan.
[5] James K. Polk: Fourth Annual Message, December 5, 1848. Reproduced at the American Presidency Project; contains the renewed recommendation of a branch mint in New York City.
[6] J. Phillips Phoenix: Branch Mints, Speech in the House of Representatives of January 31, 1851. Contemporary offprint of the New York version and of San Francisco; argument of a supporter.
[7] Benjamin Perley Poore: A Descriptive Catalogue of the Government Publications of the United States, 1885, p. 605. Entry “Letter on Land for New York Mint” relating to Mayor Kingsland’s letter of December 26, 1851, Senate Miscellaneous Document No. 12, 32nd Congress, First Session. The catalog entry was consulted, not the letter itself. No evidence of a specific parcel or acceptance of the offer.
[8] James Ross Snowden: Communication … Relative to a Proposed Branch Mint in New York, March 1860. Correspondence published by the Philadelphia Board of Trade; pp. 5–12 contain objections, cost estimate, and correction regarding the separate establishment. The $1.15 million is Snowden’s estimate, not actual construction costs.
[9] US House of Representatives: The Establishment of New Mints, the Philadelphia Mint, and the New York Assay Office, 1882. 47th Congress, First Session, Misc. Doc. 37; especially pp. 33–35 and 48 ff. on Burchard and Hutchins.
[10] United States Mint: New York Assay Office Employees Receive Honor Award, September 1, 1970. Contemporary evidence of later activities; information on earlier building history is not accepted without verification.
[11] United States Mint: History Overview . The site overview lists the New York Assay Office in Manhattan with the operating period 1854–1982.
[12] National Archives: Records of the US Mint, Record Group 104. Section 104.5.8: Description of the surviving test registers and assay records of the New York office. Individual registers were not evaluated.
[13] Federal Reserve Bank of New York: Gold Vault . Bars from the New York Assay Office and the significance of manufacturer, smelter, and fineness markings.
[14] United States Mint: West Point Mint . Timeline: Silver deposit 1938, cent production from 1973, mint status on March 31, 1988 and W mint mark on circulating coins 2019.
[15] The Metropolitan Museum of Art: The Branch Bank of the United States, Wall Street, New York . Lithograph by Anthony Imbert after Alexander Jackson Davis, 1826–1828, object 54.90.672; Public Domain. The work’s title includes “Erected in 1825,” which differs from the facade dating of 1822–1824 in Source 1. This discrepancy is not resolved here.
Editorial status: September 3, 2026.
