1867 United States Assay Commission Medal. Silver. 33 mm. By James B. Longacre. JK AC-3a. Rarity-5. MS-61 (NGC).This richly original piece combines a steel-gray obverse with a slightly lighter pewter gray reverse. Satiny surfaces are sharply struck throughout with few readily evident handling marks. All we know about this early Assay Commission issue is that 12 silver impressions were prepared in February 1867. Others were undoubtedly produced at a later time, although probably not all that many since survivors are scarce.From the Newmark Collection. Earlier from our (Coin Galleries) sale of December 2009, lot 1325. Lot tag included.