The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #512 SWITZERLAND Semi-Postals 1933 Pro-Juventute, 20c red and greenish brown, variety with groundwork (greenish buff) inverted, cancelled "Zurich Briefversand", well centered, with slightly irregular perforation at bottom, v.f., with normal used (pairs of the entire set) and unused stamp included for comparison, accompanied by certificates from Eichele ("one of the rarest modern Switzerland varieties, only a few copies known") and 2007 and 2008 Marchand certificates O Catalog #B67var | Unsold |
