used 1897-1947 used collection, including 1897, 1911 and 1919 sets, 1920 surcharge quartet, 1921 Air 35c. (3), 1923-26, 1928-29, 1929-31 sets, 1931 Air set, 1931, 1932-38, 1933 Gilbert, Air and Coronation (3) sets, Postage Due set and many others, some being perf. varieties, used; generally good to fine