The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #448 RUSSIA 1927 Esperanto, 14k green & brown, imperforate vertical pair (watermarked), brown vignette / center inverted at left, vertical invaliding perforations, n.h., v.f., rare, with Buchsbayew cert. ** Catalog #373var | Price Realized $1,600.00 |
