U.S. and Worldwide; Zemstvo
November 6-7, 2013 and November 13, 2013
| Images | Description | Current Bid |
 | Lot #510 GERMANY Air Post Semi-Officials 1912 Bork-Bruck perforated vignette without the customary adhesive, used (not tied) on card from Berlin (5 May) to Dresden, violet "Flugpost Bork und Umgegend durch Gradefliger" cachet, fine  Catalog #Mi.1 | Price Realized $325.00 |
