Mexico 1915-16, 1p & 5p trial color die proofs. 1p in brown and dark green on card mounted on piece of heavy card stock, 5p t in black on glazed paper mounted on piece of heavy card stock, with "Prueba de Dado" in pencil on face of card, Very Fine. Scott No. 513TC-514TC  Estimate $200 - 300. $0 (Image)