U.S. and Worldwide; Zemstvo
November 6-7, 2013 and November 13, 2013
| Images | Description | Current Bid |
 | Lot #374 CZECHOSLOVAKIA Semi-Postals 1919 overprints on the three Austrian Airpost surcharges, also 2h triangle and three additional values, all tied by 26.XI Praha cds on locally addressed registered cover, fine-v.f. and extremely are, signed Gilbert, with 1987 Mikulski cert. ("only two covers known with this franking"), ex-Matthew collection  Catalog #B32,34-39 | Price Realized $1,600.00 |
 | Lot #375 CZECHOSLOVAKIA Semi-Postals 1919 overprinted on Austrian "Flugpost", 1.50k, 2.50k and 4k set of three, h.r., fine-v.f., signed Calves, * Catalog #B37-39 Catalog Value $1,850 | Price Realized $575.00 |
