The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #317 KOREA, NORTH 1991 IPC, imperforate sheet of 25, each stamp with silver "85th IPC" inscriptions inverted, n.h., v.f., only 10-20 such sheets recorded  **Catalog #Mi.3207var | Unsold |
 | Lot #318 KOREA, NORTH 1994 Fossils of Korea imperforate souvenir sheet of four, stamps or frame inverted, n.h., v.f., with regular perforated souv. sheet included for comparison **Catalog #Mi.3488var | Unsold |
 | Lot #319 KOREA, NORTH 1997 Butterflies, imperf. souvenir sheet of three, frame or center inverted, n.h., v.f., with a normal perforated sheet for comparison ** Catalog #Mi.3895-97var | Price Realized $250.00 |
 | Lot #320 KOREA, NORTH 1999-2002 selection of ten different souvenir sheets or sheetlets of 12, each with marginal inscriptions inverted, variety of topicals incl. mushrooms, chess, birds, monkeys, ship, minerals etc., n.h., v.f., each with a regular sheet included for comparison, undoubtedly rare **Catalog #Mi.3949/4173var | Unsold |
 | Lot #321 KOREA, NORTH 2000 Dinosaurs, imperforate souvenir sheet, silver color inverted, thus country name and denominations inverted, n.h., v.f., rare **Catalog #Mi.4072var | Unsold |
