1884 United States Assay Commission Medal. Silver. 33 mm. By George T. Morgan. JK AC-27a. Rarity-5. Specimen-63 (PCGS).This handsome specimen exhibits dominant olive-gray patina on the obverse that yields to lighter antique silver tinting over much of the reverse. In both cases the toning is iridescent in quality, allowing ready appreciation of golden-apricot and pale lilac undertones as the surfaces dip into a light. Fully struck with a semi-reflective finish, this delightful piece is an above average survivor from an unknown mintage in silver that was not recorded in the coiners records for that year.