U.S. & Worldwide Stamps
March 13-14, 2013
| Images | Description | Current Bid |
 | Lot #1687 SWITZERLAND Air Post 1920 30c Propeller overprint, used with additional franking on registered and flown cover from Bern 8.12.20 (Basel-Frankfurt line) to Tonder (Denmark), also 1919 50c green, used on flown cover 17.6.19 (Dubendorf-Bern-Lausanne line), v.f., each with appropriate arrival pmk, signed, with 1975 Alberto Diena cert. (Zu.1-2)  Catalog #C1-2 Catalog Value SFr 6,000 | Price Realized $1,600.00 |
 | Lot #1688 SWITZERLAND Air Post 1933 20c green, top sheet margin imperforate vertical pair, n.h., pencil signed, with tiny handstamped guarantee mark, v.f., only 25 printed (Zumstein 4z) ** Catalog #C4a,var Catalog Value SFr 20,000 | Price Realized $8,500.00 |
