Russia. Uniface Obverse and Reverse Die Trial for 100 Roubles, 1991. As Y-288. Both pieces 7.1 grams. Uniface obverse and reverse die trials struck on white metal planchets. Obverse; CCCP and value below building. Reverse; Bolshoi Ballet, Ballerina. Lot of 2 coins. Brilliant Proof. Estimate Value $150 - UP