Duck Stamp Block Collection, 1936-64. Mostly n.h. on album pages; includes #RW3-RW6, RW8-RW10 & RW12-RW23 in blocks of 4, many with plate #'s, n.h. plate blocks of 6 including #RW7, RW11 & RW24-RW30, #RW31 block of 6, also a run of used issues; Scott cat $18,375 for blocks, o.g., hinged or never hinged. Estimate  $6,000 - 8,000. $0