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FINE. ONLY TWELVE EXAMPLES ARE KNOWN WITH THE INVERTED INSCRIPTIONS.
Of the twelve known examples, ten are contained in five panes of two.
Ex Cunliffe. Unitrade C$6,000.00 (Image)
Search for comparables at SiegelAuctions.com
EXTREMELY FINE. THE ONLY RECORDED COVER WITH A COMPLETE PANE OF TWO WITH INVERTED INSCRIPTIONS. AN IMPORTANT CANADIAN AIR POST SEMI-OFFICAL RARITY.
Only five pairs and two singles are recorded. This pair is the only one on cover.
Ex Cunliffe. Unpriced in Scott on cover. Unitrade value (Image)
EXTREMELY FINE. ONE OF ONLY TWO KNOWN EXAMPLES OF THE "AIRIAL" MISSPELLING. ONE OF THE HIGHLIGHTS OF THE CERE COLLECTION.
Signed Kessler. Unitrade (where it is listed as a proof) C$8,000.00 (Image)