BELGIUM (1983) Balloon over city. Ministerial proof. Scott No 1146, Yvert No 2094. Manned flight bicentenary.
AVAILABLE AT $50
BELGIUM (1983) Balloon over countryside. Ministerial proof. Scott No 1147, Yvert No 2095. Manned flight bicentenary.
AVAILABLE AT $50
NORTH KOREA (2008) Zeppelin "Hindenburg" over Lake Constance. Photo proof from printer's archive. Scott No 4786. KSC No 4586. Only 5-10 printed as test print prior to actual printing of the stamps. Each has official Korea Post stamp on reverse.
AVAILABLE AT $100
NORTH KOREA (2002) Zeppelin centenary. Compound proof. KSC No 4168, Scott Nos 4187-90
AVAILABLE AT $75
AUSTRIA (1984) Hot air balloon*. Black proof. Austrian balloon bicentenary. Scott No 1291, Yvert No 1614.
AVAILABLE AT $20