1970 Decimal definitive to 1978 Powered Flight
1974 2½c definitive, block of 30 being the lower three rows of the sheet, one stamp, row four of the middle row, showing dramatic under inking impression. This probably as a result of water/moisture on the plate. Striking and highly unusual. PFSA certificate (1977), with six signatories noting 'probably due to damage on the roller blanket'. Superb unmounted. SG 490 and var.