Proof 1d. pair on card, good to large ma

Proof 1872 South Kensington Exhibition p

Proof 1d. pair die, cut to frame-lines,

Proof 1861 1d. plate proof in black on u

Proof IMPERFORATE PLATE PROOFS: 1872-74

Proof 1d. in black on toned paper, 1d. i

Proof Cancelled 1871-74 1d. pair, 4d. pa

Proof 1d. plate proof pair in dull rose,

Proof -- 1d. plate proof pair in red on

Proof Cancelled -- 1d. orange, 2d. blue,

Proof 1956 1d. black and emerald, a marg

Proof 1d. plate proof pair in black on t

Proof The selection of imperforate plate

Proof 1855-64 plate proofs comprising or

Proof 1d. black pair in black on toned p