Letter from the Secretary of the Treasury, transmitting a report of the result of the assays of the foreign coins, made at the Mint of the United States, current, by law, in the United States.
U.S. Mint Reports (1825)
A report from the Director of the Mint on the assay of foreign coins. The same text is in the American State Papers, finance (class 3), volume 5, no. 725.
Paul Hybert summary: "An assay of foreign coins, from mint director Samuel Moore to Treasury Secretary Crawford, who relayed it to Congress. The recent assay results for the four types of foreign gold coins and three types of foreign silver coins still current are stated — they are consistent with prior results."
A transcription is at: http://www.chicagocoinclub.org/lib/us/asp/cl03.finance/v5/n725.html.