Guinea-Chess-in-Art GUINEA - CHESS IN ART - 6 Stamp MINt Sheet MNH - 7B-429 GUINEA - CHESS IN ART - MINt Stamp S/S MNH - 7B-430 GUINEA - CHESS IN ART - MINt Stamp S/S MNH - 7B-431 GUINEA - CHESS IN ART - MINt Stamp S/S MNH - 7B-432