William Clark Noble
Prominent sculptor who specialized in military-theme monuments. While not a US Mint employee, per se, he is credited with having designed Guatemala's Quetzal series of coins (25 and 50 centavos; one Quetzal) first struck at the Philadelphia Mint and issued in 1925. Noble's name, spelled NOBLES, is found incused below the scroll found on the obverse of many of the 25 centavo coins struck in 1925. Noble also designed both the obverse and reverse of Panama's second series of coins dated 1930 consisting of the tenth, quarter and half Balboa; also the obverse of the 1931 Balboa. According to the 1931 US Mint Report, William Clark Noble, as the designer of the coin series, was give one of the 20 matte proof sets prepared by the Philadelphia mint to celebrate the coins' issuance. The two engravers (not further identified) of the 57 dies used for the series, each received a proof set as well.
(Biography courtesy of Brian R. Stickney.)