Air Post stamps. 1924, Post Pigeons, 60c rose, two stamps of airpost and airpost semi-postal issues, both without watermark variety, nice and fresh, large part of OG, VF and scarce, first one with two guarantees on reverse, some authorities consider that these varieties originated from watermarked sheets with disappearing watermark at the top or bottom (Image)

Air Post stamps. 1930, Grand Duke Vytautas, 1L red, lilac and black, horizontal pair, left stamp with transposed portraits variety, full OG, NH, VF (Image)