Lot
2301 
Canal Zone, Airmail Official, 1941, 10¢ orange, type II, natural s.e. at top, tied by "Balboa, C.Z., Jul 30, 1942" duplex postmark on M.O.B. official business penalty cover to San Jose, Costa Rica, Very Fine, a scarce usage. Scott Nos. CO9; $400 Estimate $150 - 200.
Realized: $140