Corinphila Auction 284-290 Day 3

1930/46: Airmail collection incl. 1930 First Flight cover to Switzerland, 1930/32 issues with varieties, 1931 scarce 'Habiltado' set of three unused, 1932 40 c. green witth inverted and double opt. varieties and vertical pair with upper stamp "Overprint Omitted" variety, 1934 set of 16 unused with security punch-holes, "Specimen" set and Official "Specimen" set; 1938 Air set imperf. with punch-holes, Dec 1940 airmail set of nine unused, 1944 Proofs (2) of the overprint in pairs, Essays with '1944' overprint in two sizes on unused pairs, 1945 set of 13 in unused blocks of four, 1945 issue with Proofs of the overprint (2), the set in multiples and range of Inverted Overrprint varieties, 1946 Pan-American Congress set unused (214 items + a range of 17 covers).