1908 1c-10c "Suplementario" proofs, matched set of five upper sheet corner margin panes of 80, each stamp with rhomboid perfin, card mounted for approval, each sheet with two signatures, Plate Numbers "000001" and "010000" and letters A through D (1c, 2c, 4c, 5c and 10c), v.f. and unique set of proofs, issued in 1908 and also used during the...