Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Canada - Newfoundland - 1921 (November 24), Halifax Airmail, black overprint with ''Air'' and ''Mail'' have space 1½mm and with a period after ''1921'' on 35c red, used on flown cover from St. Johns to Halifax, backstamped, minor reversal flaws, still VF, C.v. $300 for stamp off cover, Est. $100-$150, Sc. #C3h