I have listed aircraft stamps for sale on my aviation stamps blog:
My prices are very reasonable and much lower than those quoted by sellers on ebay. Have a look.
Here are a few of the items listed:
Cameroon. 1976.Concorde's First Commercial Flight, Paris to Rio de Janeiro. SG MS769.
Cat. £.7.75. MNH. Price: US.$4
Cuba 2006 Aircraft. SG 1961-67. MNH
Cat. £7.70 MNH. Price: US.$3.50
Djibouti Republic. 1978 Air. Djibouti Aero Club.
SG 721-723. Cat. £3.75. FU Price: US.$1.75
Dominica. F1 fighter souvenir sheet.
SG SG MS251a. Cat. £.4.25. MNH. Price: US.$2.
French Southern & Antarctic Territories.
1969 1st Flight of Concorde. SG 53.
Cat. £60. MVLH Price: US.$20.
Gabon. 1983 Air. Ballooning Anniversaries.
SG 857-59. Cat. £4.05. MNH. Price US$2.
Gabon. 1967 Famous Aircraft. SG 88-90.
Cat. £25. MNH. Price US$12.
Samoa. 1998 80th Anniv of the Royal Air Force.
SG 1029-1032 Cat. £5.90 MNH. Price US$3.
Wallis & Futuna Islands.
1976. 1st Commercial Flight of Concorde.
SG 253. Cat. £48. MVLH Price US$18.