GREAT BRITAIN 1972 (FDC) £1 BLUISH BLACK, LONDON EC1
£1 Bluish Black redrawn high value Machin definitive on Philart cover with NATIONAL POSTAL MUSEUM, LONDON EC1 special cancel dated 6 DE 72, the first day of issue. Scarce. Generally fine. SG831b; SGUC12; SCMH168
