Lot 362, Newfoundland 1921 35c Halifax Airmail overprint with “period after 1921”, XF NH, sold for C$585 March 24, 2022 by Sparks Auctions Lot 362 Newfoundland #C3b 1921 35c Halifax Airmail Overprint with Period After 1921, mint never hinged, with bright colour, extremely fine and fresh. Unitrade CV$500, sold for C$500.00 plus 17% buyer’s premium.