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Type 13 Surcharge
8 inches in height and comes with a branded flight case
1920 – September 15
Very fine condition
vertical interpane block of 4 from November 1924 printing using combined plates '7' (upper) and '12' (lower)
Great Britain 1841 1d Rainbow Trial (State 3), SGDP20 Brunei stamps Type 13 SurchargeGreat Britain 1841 1d Rainbow Trial (State 3), SGDP20. A superb unused four margin top marginal example printed on white wove paper in deep green. A scarce specialised philatelic item of early GB postal history. These trials were produced to test various combinations of stamp and cancellation ink. It has long been considered that the voiding of the corners was achieved by filling the grooves of the plate with wax. However, recent research has brought