cover 1912-25, French Air Post semi-officials, three flight cards or covers, 1912 Nancy-Luneville flight cover with Air Post semi-official stamp (tied), other two are 1923 Montpellier Aviation Meet cards or covers, each with two special Air Post semi-officials, on one of the covers both semi-official stamps have doubled vignettes, one of the latter two covers has faint toning band, otherwise fine-very fine lot