1930 50c on 36c olive green "Columbia", position 3 of the setting, perfectly centered, pencil signed, v.f., with 1934 BPA certificate (300 copies of the 36c Caribou were overprinted, 160 were sold at the GPO in St. John's, 48 were sent to Harbour Grace Post Office, remaining 92 were sold to "select personalities". Only 100 were actually used: 65 from St. John's and 35 from Harbour Grace) (Unitrade CAN $24,0000) cat. $14000 (Cat No. C5) (Image)

Cat. $14000, Est.US$5,000

1930 50c on 36c olive green "Columbia", position 2, used on cover from St. John's Sep 25, 1930 to England, Harbour Grace Oct.9, 1930 transit on back, filing folds away from the stamps, v.f., signed Diena, with 2003 Greene Foundation certificate. Also included is a letter from Wm Heap to "Dear Mr. Cochrane, I return herewith 2 envelopes, as requested" (Unitrade CAN $15,000) cat. $14000 (Cat No. C5) (Image)

Cat. $14000, Est.US$3,000

1930 50c on 36c olive green "Columbia", position 4, v.f., used on Dominion Boot & Shoe Mfg. corner card cover from Harbour Grace Oct.9, 1930 cover to England, with 2009 PFC (only 48 stamps were sent to Harbour Grace Post Office, including two complimentary blocks to the pilot and the navigator, hence only a few covers known from Harbour Grace) cat. $18000 (Cat No. C5) (Image)

Cat. $18000, Est.US$5,000

1930 50c on 36c olive green "Columbia", position 3, v.f., used on cover from Harbour Grace Oct.9, 1930 to England, with Lowes Toft Oct 15, 30 arrival pmk on back, filing fold away from the stamp, with 1965 BPA certificate (only 48 stamps were sent to Harbour Grace Post Office, including two complimentary blocks to the pilot and the navigator, hence only a few covers known from Harbour Grace) cat. $18000 (Cat No. C5) (Image)

Cat. $18000, Est.US$5,000

1930 50c on 36c olive green "Columbia", position 2, v.f., used on corner card R.D.McRae & Sons cover from Harbour Grace Oct.9, 1930 to England, endorsed "By Special Air Mail per Aeroplane Columbia", minor cover toning away from the stamp, with 2009 Greene Foundation certificate (also included unused Newfoundland Post Office letterhead stationery) cat. $18000 (Cat No. C5) (Image)

Cat. $18000, Est.US$5,000

1930 50c on 36c olive green "Columbia", position 2, used on cover from St. John's Sep 25, 1930 to England, endorsed "Per Air Mail Columbia HrGrace to London, England, September 1930", part of backflap missing, minor cover tears at top, fine, with 1933 BPA and 2001 Greene Foundation certificates, cat. $14000 (Cat No. C5) (Image)

Cat. $14000, Est.US$3,000

1930 50c on 36c olive green "Columbia", position 3, used on cover from St. John's Sep 25, 1930 to England, Harbour Grace Oct.9, 1930 transit on back, v.f., manuscript "Arr. Croydon 11 Oct 1930" arrival docketing, cover signed by J.Errol Boyd, Harry P. Connor and Charles Levine (owner of the airplane), one of only two covers known signed by the two pilots and owner of the airplane, cat. $14000 (Cat No. C5) (Image)

Cat. $14000, Est.US$3,000