Lot 51163 – 1900-74, Important mint & used stock in eight stockbooks

1900-74, Important mint & used stock in eight stockbooks plus a few boxes and folders crammed with glassines, strength in the 1920s and 30s with important airmail issues, noted ca.14 mint or never hinged sets of the 1926/27 airs issue, plus a dozen used sets, Zeppelins with about mint 10 sets of the 1928 issue, plus about 10 used sets, 1930 South America flight with three mint sets plus a used set, 1931 Polar flight with six mint sets and two used sets, 1933 Chicago flight with three mint sets plus four used sets plus some extra 2RM singles, good later issues with good Berlin including 1949 UPU with seven mint sets, among other better sets, much value