Lot 1068 – 1943 Russian Philatelic Society INVERTED OVERPRINT on 1941 Thrift Movement souvenir sheet

1943 Russian Philatelic Society INVERTED OVERPRINT on 1941 Thrift Movement souvenir sheet, no gum as issued, some slight handling traces as usual for even the un-oveprinted sheet and of scant importance, a good example missing from most collections, a rare opportunity to acquire this elusive item.