U.S. and Worldwide Stamps; South America; Russia
January 13-14, 2010
| Images | Description | Current Bid |
 | Lot #2054 BOLIVIA Air Post 1924 10c vermilion & black, center inverted, lower right sheet corner single, hinged in margin only, stamp n.h., v.f., signed Sanabria, with certificate. Only 50 examples of this inverted center were printed (YT 124a, catalogue value for hinged) ** Catalog #C1a Catalog Value €2,500 | Price Realized $2,300.00 |
 | Lot #2055 BOLIVIA Air Post 1924 10c vermilion & black, center inverted, block of six, well centered, never hinged, fresh and v.f., with certificate. Only 50 examples of inverted center were printed, this being the only recorded block of any size (YT 124a, catalogue value for hinged singles)  **Catalog #C1a Catalog Value €15,000 | Unsold |
 | Lot #2056 BOLIVIA Air Post 1924 2b black brown & black, center inverted, sheet margin single, stained, with pulled perf. at upper left, fine appearance, with 1994 APS cert. Only one sheet of 25 inverted centers were printed (YT 129a) * Catalog #C6var Catalog Value €2,250 | Price Realized $1,300.00 |
 | Lot #2057 BOLIVIA Air Post 1930 1b red brown & black, gold overprint inverted, h.r., fine, signed Sanabria * Catalog #C18var | Price Realized $270.00 |
