The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #126 ECUADOR Air Post 1969 Operacion Amigo, five imperforate stage proofs in various colors, vertical pairs, also a horizontal pair with black inverted, n.h., v.f. P** Catalog #C459P | Unsold |
 | Lot #127 ECUADOR Air Post 1970 $1.30 Butterfly, blue inverted, n.h., with 2009 PFC, ** Catalog #C461var | Price Realized $180.00 |
