£270 - £350
GB.GEORGE V 1929 ½d, 1d and 1½d Postal Union Congress values overprinted "CANCELLED", SG Spec. NCom5/7t, mint, the 1½d never hinged, 1d & 1½d with trimmed perfs. Cat £1800 (3 stamps) Lot 1646 (P) [c]
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