The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #20 UNITED STATES POSSESSIONS 1907 2c carmine red and black, center inverted and Canal Zone reading up, used, bright color, small tear and minor creasing, otherwise fine, with 2004 Philatelic Foundation Certificate. This is one of Canal Zone's greatest rarities, Only nine copies are recorded, all used, including one on cover, all of which are faulty to some degree. Apparently only one sheet was printed and went undetected until first reported in 1911, O Catalog #23g Catalog Value $ 6,000 | Unsold |
