The Mahendra Sagar Collection of Inverted Centers
October 5-6, 2011
| Images | Description | Current Bid |
 | Lot #134 ETHIOPIA Air Post 1966 Animals, imperforate composite strip of five, brown images inverted for each value, v.f., rare, with 2007 Alex Rendon certificate, also imperf. sheets of five, one with olive images printed separately, some creases and minor faults, rare P Catalog #C102-106P | Unsold |
 | Lot #135 ETHIOPIA Air Post 1966 Animals, imperforate and gummed double composite strip of five (215 x 279 mm), green centers and frames printed separately (centers on the left and frames on the right), on the same sheet, brown centers and frames printed separately and inverted in relation to the green printing (centers on the left and frames on the right), sheet marked at the top and has guide marks for both colors, minor wrinkles, otherwise fine-v.f., probably unique, with 2007 Alex Rendon certificate  PCatalog #C102-106P | Unsold |
