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Catalog Number
Details
Description
Denomination
DateIssued
Perforation
Watermark
C1
Details
Plane Over Map of Canada
5c
09/21/28
12
Unwmk.
C1a
Details
Plane Over Map of Canada
5c
09/21/28
Imperf.
Unwmk.
C2
Details
Mercury and Western Hemisphere
5c
12/04/30
11
Unwmk.
C3
Details
Plane Over Map of Canada
6c on 5c
02/22/32
12
Unwmk.
C3a
Details
Plane Over Map of Canada
6c on 5c
02/22/32
12
Unwmk.
C3b
Details
Plane Over Map of Canada
6c on 5c
02/22/32
12
Unwmk.
C3c
Details
Plane Over Map of Canada
6c on 5c
02/22/32
12
Unwmk.
C3d
Details
Plane Over Map of Canada
6c on 5c
02/22/32
12
Unwmk.
C4
Details
Mercury and Western Hemisphere
6c on 5c
07/12/32
11
Unwmk.
C5
Details
Daedalus
6c
06/01/35
12
Unwmk.