Lot
817 
Canada, Airmail, 1928, 5¢ brown olive, imperforate, top margin plate block of 6 with "Ottawa No. A-1 915-A" imprint, o.g., never hinged, large balanced margins, bold color and very fresh, Very Fine and choice, very rare with only ten plate blocks at most exist.Scott No. C1a $975 for pairs.
Current Opening Bid: $325
Lot
818
Canada, Airmail, 1928, 5¢ brown olive, imperforate plate no. "A-1" block of 6, o.g., never hinged though very slightly disturbed, large margins & fresh color, Very Fine and scarce. Unitrade C$1,800 for hinged ($1,260).Scott No. C1a Estimate $300 - 400.
Current Opening Bid: $150
Lot
819 P
Canada, Airmail, 1938, 6¢ blue, plate proof on india on card, top sheet margin block of eight with central vertical gutter, large margins, fresh and Extremely Fine. Unitrade No. C6P C$2,000 ($1,400).Scott No. C6P Estimate $400 - 600.
Current Opening Bid: $240
Lot
820
Canada, Airmail, 1938, 6¢ blue, imperforate pair, a huge-margined horizontal pair with sheet margin at right, o.g., never hinged, Extremely Fine. Only 75 pairs sold.Scott No. C6a $850.
Current Opening Bid: $190
Lot
821
Canada, Airmail, 1938, 6¢ blue, imperforate, top left corner margin plate no. "1" block of 4, o.g., stamps never hinged, hinged in selvage only, large margins and bold color, Very Fine and choice, an extremely rare plate block, ex-G. Cooper.Scott No. C6a $1,700 for pairs.
Current Opening Bid: $425
Lot
822
Canada, Airmail Special Delivery, 1942, 16¢ bright ultramarine, imperforate, o.g., never hinged, wide margins, Extremely Fine, only 75 pairs recorded.Scott No. CE1a $850.
Current Opening Bid: $220
Lot 823 P
Canada, Special Delivery, 1898, 10¢ blue green, plate proof on India on card, wonderfully fresh with large balanced margins, Extremely Fine. Only 73 were sold. Unitrade C$1,000 ($700).Scott No. E1P Estimate $200 - 300.
Current Opening Bid: $100
Lot 824 P
Canada, Special Delivery, 1935, 20¢ dark carmine, large die proof, die-sunk on 9" x 6" card, with Canadian Bank Note Co. imprint and Die No. X-G-586; "wrong color" penciled in margin, Extremely Fine and rare.Scott No. E6P Estimate $500 - 750.
Current Opening Bid: $250
Lot 825 P
Canada, Special Delivery, 1935, 20¢ dark carmine, plate proof, vertical pair, large even margins, vivid color, Extremely Fine. Unitrade No. E6P C$700 ($490).Scott No. E6P Estimate $200 - 300.
Current Opening Bid: $100
Lot
826
Canada, Special Delivery, 1935, 20¢ dark carmine, imperforate, o.g., never hinged, large even margins, Extremely Fine.Scott No. E6a $900.
Current Opening Bid: $220