SG 623A var. 1961 2½d. Strip of 4. Variety,’each stamp with black partially missing due to solvent spillage on the “black” cylinder’. SUM. With Cert.

Great Britain 1961 Queen Elizabeth II Centenary of Post Office Savings Bank. 2½d. black and red. Strip of 4. Variety,’each stamp with black partially missing due to solvent spillage on the “black” cylinder’. Superb unmounted mint (with normal for comparison).  British Philatelic Association Certificate No. 72,803  (2008). OUTSTANDING AND VERY RARE.  AN EXHIBITION PIECE.