GB postage stamps

Great Britain 1915 2s6d yellow brown "Seahorses" (Watermarked Reversed), SG406wj. A superb, perfectly centred unmounted mint, with full original gu...

Great Britain 1911 2d Engravers Sketch Die for unissued value. A very fine fully cleared die proof printed in black on thick white proofing paper (...

Great Britain 1935 2½d Prussian Blue, SG456a. A very fine and fresh unused, with original gum, top marginal example of this ever popular "error of ...

Great Britain 1935 2½d Prussian Blue, SG456a. A very fine and fresh unused example, with original gum, of this famous "error of colour". Offered wi...

Great Britain 1915 2s6d very deep brown "Seahorses" (Watermark Inverted), SG405var. A very fine unused, with original gum, right hand marginal pair...

Great Britain 1924 5d brown, SG425var. A very fine unused example, with original gum, overprinted "CANCELLED" type 33. A very scarce King George V ...

Great Britain 1913 2s6d-£1 "Seahorses", SG400/04var. Very fine unused with original gum (10s & £1 without gum as is usual) set of four printed ...

Great Britain 1915 2s6d very deep brown "Seahorses" (Watermark Inverted), SG406wi. A very fine and fresh unmounted mint example with full original ...

Great Britain 1911 ½d "Downey" head die proof (Accepted die without value), SG321var. A very fine and fresh example in deep carmine on proof paper ...

Great Britain 1911 1d "Downey" plate proof (Die 1b), SG329var Superb imperforate right hand marginal example printed in black on thick white unwate...

Great Britain 1911 7d Henschel essay second proof. A very fine colour trial essay endorsed "Grey" in manuscript below. A scarce specialised philate...

Great Britain 1912 ½d green (Die 2, Watermark Simple Cypher), SG344var. A very fine unused B12(c) corner marginal control block of six, with origin...

Great Britain 1913 4d plate proof, SG378var. A very fine unused top left hand corner marginal block of four plate proofs printed in pale ultramarin...

Great Britain 1913 2s6d "Seahorses" colour trial, SG400var. A very fine unused imperforate example printed by Waterlow in blue on ungummed "JAS WRI...

Great Britain 1920 5s rose red "Seahorses" (23mm high, Royal cypher paper trials), SG416var. A very fine unmounted mint example with full original ...

Great Britain 1911 7d Hentschel half tone essays (Small format). Very fine group of essays in four different colours, red, blue, mauve and green. e...

Great Britain 1913 £1 dull blue green "Seahorses", SG404. A superb unused with original gum right hand corner block of four overprinted "CANCELLED"...

Great Britain 1915 2s6d Sepia "Seahorses" (seal- brown, Watermark, Inverted), SG408wi. A very fine unmounted mint, with full original gum, left han...

Great Britain 1924 5d Brown, SG425. A very fine used marginal example tied to a 'Marsh' registered envelope by a Camberwell Green S.E. circular dat...

Great Britain 1913 £1 Green "Seahorses", SG403. A very fine unmounted mint example with full original gum. Well centred example printed by Waterlow...

Great Britain 1934 1½d "Photogravure" large format colour trials, SG441var. Very fine unused original gum set of four bottom left hand corner margi...

Great Britain 1912 4d Die Proof of Eve's Wreath Design, SG379var. Very fine example printed in black on this white glazed card (68 x 78mm) dated '1...

Great Britain 1935 2d Orange (Intermediate format) variety, SG442var. Superb unmounted mint with full original gum imperforate horizontal pair. Clo...

Great Britain 1913 5d Die proof, SG381var. Very fine example cleared example printed in black on thin white glazed card (71x78mm) dated in manuscri...