1928 5c brown, two blocks of four, imperf. horizontally and vertically, n.h., v.f., cat. $1560 (Cat No. C1b,C1c) (Image)

Cat. $1560, Est.US$500

1928 5c brown, vertical pair imperf. horizontally, n.h., v.f., cat. $340 (Cat No. C1c) (Image)

Cat. $340, Est.US$100

1928-35 5c brown, vertical pair imperf. horizontally, also 6c red brown, imperforate vertical pair, n.h., v.f., cat. $1290 (Cat No. C1c,C5b) (Image)

Cat. $1290, Est.US$250

1927 Western Canada Airways Service, 10c black & pink, 10c black & orange, two different flight covers, used in combination with regular Canadian franking, fine-v.f., cat. $475 (Cat No. CL40,41) (Image)

Cat. $475, Est.US$200