U.S. and Worldwide; Zemstvo
November 6-7, 2013 and November 13, 2013
| Images | Description | Current Bid |
 | Lot #512 GERMANY Air Post Semi-Officials 1913 Liegnitz vignette, yellow brown on yellow, tied by "Flugpost A.D. Katzbach" 9.11.1913 hs, with corresponding German adhesive 5pf green canc. 9.11.13 on official ppc (slight abrasions on picture side), "Sachsen Hamburg-Amerika Linie" hs, v.f., rare, with 2000 Dr. Simon certificate,  Catalog #Mi.11b Catalog Value €4,000 | Price Realized $1,900.00 |
