1904 United States Assay Commission Medal. Silver. 40 mm x 57 mm, plaque. By George T. Morgan. JK AC-48a. Rarity-5. MS-63 (NGC). Vivid gold, magenta and electric blue toning on the obverse, the reverse in frosty pearl gray, peripherally toned in a narrow frame of indigo. One of only 40 examples produced in silver.