The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #92 COLOMBIAN STATES Bolivar 1882 10p gray and red, trial color proof on card, center inverted, marginal stain and inclusion, otherwise fine P Catalog #36P | Price Realized $325.00 |
 | Lot #93 COLOMBIAN STATES Bolivar 1882 10p green and blue, trial color proof on india, center inverted, with security punch, sealed tear, fine appearance P Catalog #36P | Price Realized $325.00 |
