United States UNITED STATES POSSESSIONS CANAL ZONE Air Post
Sale No: 0120
Lot No:330
Symbol:**b
Cat No:C2
1929 15c on 1c yellow green, surcharge type II, top sheet margin Plate Block of six, l.h. in ungummed portion of the selvage only, stamps n.h., fine-v.f. (Cat No. C2) (Image)