GREAT BRITAIN 1961 (MLH) 2½D POSB CYL BLOCK WITH FOREHEAD RETOUCH, PERF P/I
2½d Post Office Savings Bank Centenary cylinder 1E–1F block x 6, perf type P/I, Timson printing, with forehead retouch on top left stamp. Fresh and fine. Mint lightly hinged in the margins only. SG623Avar; SGW16b; SC379var
Note: the forehead retouch flaw occurs on column 19, row 4 of sheets
