Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Canada - Newfoundland - 1919-21, Alcock and Brown Flight, black surcharge $1 on 15c scarlet, and Halifax Airmail, black surcharge with period after ''1921'' $1 on 35c red, nicely centered, large part of OG, VF, C.v. $370, Unitrade C.v. CAD$550, Est. $120-$150, Scott #C2, C3b