France 1981 Tourist Publicity - St John's Cathedral, Lyon stamp sized black & white photographic proof of original artwork, slightly different to issued stamp with value expressed as 0.00 and covered with 'Maquette', as SG 2403 exceptionally rare

France 1981 Tourist Publicity - St John's Cathedral, Lyon stamp sized black & white photographic proof of original artwork, slightly different to issued stamp with value expressed as 0.00 and covered with 'Maquette', as SG 2403 exceptionally rare