1930, Mercury, 5c olive brown, bottom sheet margin block of six (2x3), bold color and nice centering, full OG, NH, VF, C.v. $600, Unitrade C.v. CAD $840++, Est. $200-$300 (Image)

1926, Airplane and Angels over the Globe, 5c brown olive, vertical imperforated pair with nice margins, fresh, unused, no gum, VF, C.v. $260, Est. $150-$200 (Image)

1932, inverted black surcharge 6(c) on Airplane and Angels over the Globe 5c brown olive, large part of OG, F/VF, PF certificate, C.v. $225, Est. $100-$150 (Image)

1932, triple black surcharge 6(c) on Airplane and Angels over the Globe 5c brown olive, block of four, nice and fresh with usual centering, full OG, NH or LH (top right stamp) and fine, scarce multiple as only 200 such errors were printed, each stamp with D. Forester guarantee hs, Greene Foundation certificate mentions this block as NH, C.v. $1,975++, Est. $800-$1,000 (Image)

AIR POST AND SPECIAL DELIVERY STAMPS IN MULTIPLES: 1927- 46, complete Air post issues in 8 blocks of four and 1 block of six, 4 blocks of four for Air Post Special Delivery and 8 blocks of four for Special Delivery stamps, all are in perfect quality, full OG, NH, generally VF, C.v. $2,225++, Est. $500-$600 (Image)

1919, the Aero Club of Canada (Toronto - New York), $1 red and blue, nicely centered, full OG, LH, VF, C.v. $350, Est. $150-$200 (Image)

MULTIPLES OF AIR POST SEMI-OFFICIAL STAMPS: 1927, Western Canada Airways Service, (10c) black and rose, complete sheet of 50 (light fold along 7th horizontal row, all NH), Yukon Airways, 25c dark blue, two vertical strips of 5 (formerly complete strip of 10 (9 stamps - NH), British Columbia Airways, 5c ultra, two sheets of 50 (NH/hinged (5) or unused no gum), some folds or edge separations, mainly F/VF, C.v. about $1,600, Est. $500-$600 (Image)

1932 (May 19-26), Pioneer Flight pre-printed cover from St. John's to Scotland, franked by 50c and $1 of the Pictorial issue, received in Ayr on May 26, returned to sender on June 16, with Glasgow transit (17.JU.32) and North Sydney June 25 arrival marking, F/VF and well traveled item, Est. $100-$150 (Image)

1933, Labrador issue, 5c light brown, right sheet margin imperforated block of four, post office fresh, full OG, NH, VF, C.v. $750, Unitrade C.v. CAD$1,120 as two pairs, Est. $400-$500 (Image)

1898, ½c-$5, complete set of 16 card mounted plate proofs, beautiful margins, bold colors, no gum as produced, NH, VF, only 400 complete sets possible, Unitrade C.v. CAD$7,000, Est. $2,000-$2,400 (Image)

1897, 15c steel blue, right sheet margin single, full OG, NH, fine, C.v. $750, Unitrade C.v. $450, Est. $150-$200 (Image)

1859, Beaver 5c vermilion, intact perforation 11¾, minor oxidation, centered to the right, traces of OG, fine, C.v. $800, Est. $150-$200 (Image)

1867, Beaver, imperforated trial color proof of 5c in black, block of four on India paper with enlarged margins at right and bottom and clear at left and top, no gum as issued, NH, F/VF and rare multiple, Unitrade #15 TCvii, C.v. CAD $3,200++, Est. $700-$800 (Image)

1859, Queen Victoria, imperforated trial color proof of 2c in green, printed on India paper and mounted on card, no gum as issued, VF, APEX certificate, Unitrade #20 TCii, C.v. CAD$400, Est. $100-$150 (Image)

1903, 2c carmine, type I, left margin imperforated pair printed on vertical wove paper, no gum as issued, NH, VF and scarce, only 400 stamps were printed, C.v. $825, Unitrade #90c, C.v. CAD1,100, Est. $250-$300 (Image)

1903, 7c olive bistre, left sheet margin horizontal imperforated pair printed on vertical wove paper, no gum as issued, NH, VF, C.v. $1,100, Unitrade C.v. $1,000, Est. $250-$300 (Image)

1916, 1c green, wet printing, bottom sheet margin single with B lathework, full OG, NH, VF, C.v. CAD$180, Est. $75- $100 (Image)

1918, 3c brown, wet printing, block of four, strong color and well centering, full OG, NH, VF, C.v. $260, Unitrade C.v. CAD$600, Est. $100-$150 (Image)

1922, 5c violet, wet printing, perfectly centered block of four, full OG, NH, VF, C.v. $440, Unitrade C.v. CAD$720++, Est. $150-$200 (Image)

1925, $1 orange, dry printing, nicely centered block of four, full OG, NH, VF, C.v. $860 as singles, Unitrade C.v. CAD1,440, Est. $300-$400 (Image)

1924, 1c yellow, 2c green and 3c carmine, imperforated complete set of three in horizontal pairs, full OG, NH, VF, C.v. $330++, Unitrade C.v. CAD$500 as singles, Est. $200-$240 (Image)

1935, 1c-$1, complete set of 11 imperforated plate proofs, printed on India paper and mounted on cards, high values with sheet margins, no gum as issued, NH, VF, Unitrade #217P-27P, C.v. CAD $1,800, Est. $700-$800 (Image)

1935, 5c blue, horizontal pair imperforated vertically, full OG, NH, VF with ''HHH'' hs on reverse, C.v. $340, Unitrade C.v. CAD$450, Est. $150-$200 (Image)

1928, 2c green, left sheet margin horizontal imperforated pair, full OG, NH, VF, C.v. $125, Unitrade C.v. CAD $187.50, Est. $75-$100 (Image)

1928-29, 4c yellow bistre, horizontal pair imperforated vertically, full OG, NH, VF, C.v. $160, Unitrade C.v. CAD $225, Est. $100-$120 (Image)