Great Britain 1929 1/2d green Postal Union Congress, SG434var

Great Britain 1929 1/2d green Postal Union Congress, SG434var.

A very fine unused original gum example overprinted "CANCELLED" type 33.

Scarce, particularly in this fine condition.

GB Specialised Catalogue Number: NCom5t.

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The Stanley Gibbons current catalogue price is £650.

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