U.S. and Worldwide; Zemstvo
November 6-7, 2013 and November 13, 2013
| Images | Description | Current Bid |
 | Lot #59 United States - Air Post Flight Covers 1918 24c carmine & blue, v.f., used with 2c franking on flown ppc (actually a Swiss "Pro Aviazione Nazionale Svizzera" aviation postcard), Washington, May 15, 1918 to Philadelphia, v.f. and most unusual usage of a foreign card on a domestic first flight,  Catalog #C3 Catalog Value $750 | Price Realized $450.00 |
