unused Block Larger Than four  On Official stamps, "2" on 24c. emerald-green lower left corner block of six (2x3) with plate number, the top left stamp S.G. Type 24, the others Type 23; two very minor tone spots and the bottom pair with horizontal crease, otherwise fine with large part original gum. A very rare multiple. Sc. 100/101; S.G. 157/157a, £1,250+. Photo
unused Block Larger Than four On Official stamps, "2" on 24c. emerald-green lower left corner block of six (2x3) with plate number, the top left stamp S.G. Type 24, the others Type 23; two very minor tone spots and the bottom pair with horizontal crease, otherwise fine with large part original gum. A very rare multiple. Sc. 100/101; S.G. 157/157a, £1,250+. Photo

Details
unused Block Larger Than four On Official stamps, "2" on 24c. emerald-green lower left corner block of six (2x3) with plate number, the top left stamp S.G. Type 24, the others Type 23; two very minor tone spots and the bottom pair with horizontal crease, otherwise fine with large part original gum. A very rare multiple. Sc. 100/101; S.G. 157/157a, £1,250+. Photo