#52 - Centenary of Royal Institute of Chemistry stamps, 1977
celebrating British Achievement in Chemistry.
Designed by Jerzy Karo, each stamp commemorates a different Nobel prize winning achievement from the last 100 years; Steroids
- Conformational Analysis (8 1/2p), Vitamin C
- synthesis (10p), Starch
- Chromatography (11p) and Salt
- Crystallography (13p).
I love the Steroids one with the overprinting and really bright colours - it's a great stamp.