Lot
1223 
Canal Zone, Post Office Seal, 1917, slate violet, used to seal cut open right edge of inbound airmail cover from Miami, Florida bearing U.S. 5¢, 10¢ airmail tied by "Miami, Fla. Apr 25, 1930" machine cancel to Postmaster Cristobal, Canal Zone, returned to sender, Very Fine and scarce use. Scott No. OX3 $250.
Realized: $120