1931, In aid of the Turkish Aviation Society: complete sheet of 110 of the overprint stamp "Bir lira on 2k", mint, NH, sheet folded twice, a little bit stained, according to Isfila catalogue 307.000 TRY in all, this are approx. 86,000 EUR. (Michel 20) (M) (Image)

1931, Air Fund Issue, postal tax air post stamps 15k green & yellow (Scott #RAC11) in a block of 4 surcharged in red "Bes / lira", two stamps mint mnh, the other ones unused with hinge, very scarce. (Isfila T 22) Catalogue Value 13.000,-++ (Image)