Monday, September 1, 2014

U. S. Mint Philadelphia Ingots - Hallmarks

Three different hallmarks can be found on U.S. Mint Philadelphia silver ingots. As I noted in the last post about U.S. Mint Philadelphia, all three are used without apparent pattern (yet) throughout the silver ingot run of 1946. The second hallmark is not from my collection and I have not yet found a better quality photograph to copy. 

While similarities of the eagle vignette can be found between the second and third hallmarks on silver ingots from Philadelphia, New York and San Francisco, the first hallmark is unique to Philadelphia. It is interesting that that while all U.S. Mint Philadelphia ingots are dated 1946 (one 1956 exception as noted previously), the vignettes on the second and third hallmark appear to be out of date range with other government mint and assay offices.

Based on government ingots that I have studied to date, the eagle vignette on the second hallmark first appears on U.S. Assay Office New York silver ingots in 1909 and runs through at least 1949. It was not used by the Mint Of The United States At San Francisco silver ingots.

The eagle vignette on the third hallmark first appears on Mint Of The United States At San Francisco silver ingots in 1956 and runs through 1960. The very same eagle vignette appears on U.S. Assay Office New York silver ingots in 1957 and runs through 1984. The use of this particular eagle vignette on U.S. Mint Philadelphia silver ingots in 1946 predates all other government mint and assay offices by ten years.


U.S. Mint Philadelphia 1946



U.S. Mint Philadelphia 1946



U.S. Mint Philadelphia 1946 & 1956


Anyone with any information on U.S. Mint Philadelphia silver ingots, please let me know.

Silver Ingots
Ken

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