Lot 939 o
Airmail, 1927, 20¢ Map & Planes, perfectly centered within extra large margins, rich color, neat wavy-lines machine cancel, a Superb gem, ex-Morton; with 2015 P.S.E. certificate, Graded (Gem 100, SMQ $750), this is the sole example graded Gem 100, with only one graded higher.Scott Nos. C9 $2.