Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Canada - Newfoundland - 1931, Airmail Pictorial issue, imperforate plate proofs of 15c, 50c and $1 in black, complete set of three on bond paper, nice margins around, no gum as produced, NH, VF and scarce, $400-$500, Scott #C6-8