1907 Small Papua Overprints applied at Brisbane (S. 1907 Horizontal watermark, 2½d black and ultramarine horizontal marginal pair, and 2½d black and dull blue, superb mint, the pair unmounted. With a copy of a B.P.A Certificate (1987) for a block of six, from which the pair has been removed. S.G. 35/a, £485. (3).