China, 150-Yuan (3), 1993 (2), 1994 (Y.355 (2), Y.428), in boxes with certificates, all choice Proofs, together with a year of the dog four piece medal set comprising gold medals (2), 5, 1/4-Ounce, and silver medals (2), 5, 1-Ounce, in box, with certificate, choice Proofs (4 items; 7 pieces) (lot)