Proof A selection of proofs comprising 1901 Waterlow plate proofs in carmine (3), 1902 reserve plate 4 plate proof in blue-black block of four, 1906 Waterlow W1 plate proofs in black (2, one defaced), in vermilion block of six, and perforated in black (2), 1906 Waterlow W2 unit die 1d. bottle-green; fine. (10 items)