1927 (August 4) Fort Hope - Sioux Lookout Flight; Patricia Airways Limited envelope endorsed "First Air Mail from Fort Hope" and "Via Albany River, Collins & Sioux Lookout", bearing 2c Confederation and tied by straightline PATRICIA AIRWAYS & EXPLORATION LIMITED handstamp in blue; on reverse Style Three with ascending 10c overprint (Type A) in red with descending 5c overprint (Type B) in black, postmarked Sioux Lookout AU 24 27 CDS on arrival. A very rare flight cover - only 5 pieces were carried; they were franked with either CL27 or CL28, VF (AAMC CL27-2700; Unitrade CL27) (Image)

Estimate 750 $