NNP

Davis 325. 1 plate, medal-ruled. A table summarizes the Mint cabinet at the time, some 3800 pieces, of which approximately 10% were U.S. issues. There is no specific cataloguing of the U.S. coinage, but this important work describes the genesis of the collection: “The collection was commenced in June, 1838. Long before that date, however, Mr. Adam Eckfeldt, formerly Chief Coiner, led as well by his own taste as by the expectation that a conservatory would some day be established took pains to preserve master-coins of the different annual issues of the Mint, and to retain some of the hnest foreign specimens, as they appeared in deposit for recoinage. As soon as a special annual appropriation was instituted for this object, by Congress (which was as soon as it was asked), the collection took a permanent form, and from the nucleus above mentioned, has gone on in a continual course of augmentation since. It is now nearly as large as we expect or wish to have it, excepting, however, that specimens of new coinage, domestic or foreign, must be added as they appear.” 

See also Coin World, May 15, 2023, p. 33 (article by Joel J. Orosz).