The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #297 ITALY Air Post Semi-Officials 1926 Trans-Polar Dirigible Flight "Norge" vignette, horizontal imperforate pair, variety missing color (gray brown) frame double, unused without gum, also a regular stamp included for comparison, v.f., rare P | Price Realized $240.00 |
