The London 1980 International Stamp Exhibition was an international stamp exhibition held under FIP (Fédération Internationale de Philatélie) patronage. It was held at Earls Court from the 6–14 May 1980.
London 1980 International Stamp Exhibition Wikipedia
A 50p stamp and miniature sheet, both depicting London landmarks, were issued on 9 April to publicise the exhibition (S.G. 1118/1119). They were designed by Jeffrey Matthews and were printed by Harrison and Sons using the line engraving process. Previous stamp issues promoting the exhibition were the 1978 Historic Buildings and 1979 Sir Rowland Hill miniature sheets (S.G. 1058 and 1099). A 10p stamp booklet was also issued.
Visitors to the exhibition were able to obtain special handstamp cancellations for first day covers and other items. The handstamps changed for each day's theme.6 May - National Stamp Day
7 May - Post Office Day
8 May - Day of the Americas
9 May - United Nations Day
10 May - Youth Day
12 May - Society Day
13 May - Commonwealth Day
14 May - Europe Day
There was no handstamp used on Sunday, 11 May.
The Grand Prix went to the following exhibits:Grand Prix d'Honneur: R. B. Pracchia (Brazil) for "Imperial Brazil".
Grand Prix International: A. Perpina Sebria (Spain) for "Classical Spain 1850-54".
Grand Prix National: 'Daisy' (Switzerland) for "Queen Victoria".
The following were best in their class:Aerophilately: E. Gebauer (Venezuela) for "The Airmail Stamps of Colombia".
Thematic Philately: M. J. Hecq (Belgium) for "Railways" and Dr. E. Schlunegger (Switzerland) for "Ships and Navigation".