150th Anniversary of Royal Microscopical Society

Issue Date - September 5, 1989

SG 1453 - Snowflake (x10), 19p

SG 1454 - Caliphora erythrocaphala (fly) (x5), 27p

SG 1455 - Blood Cells (x500), 32p

SG 1456 - Microchip (x600), 35p

First Day of Issue Official Covers