8 cent Library of Parliament
Sheet Stamps
The domestic letter rate increased from 7 cents to 8 cents on January 1, 1972. A new 8 cent denomination stamp, printed by the British American Bank Note Company, was issued on December 30, 1971. The stamp, featuring the Library of Parliament in addition to the image of Queen Elizabeth, paid tribute to the United Nation's International Book Year.
Canada Post Office Pamphlet
From the National Archives of Canada:
Sheet Stamp Issue and Variations
1. Dextrine Gum
2. Dextrine Gum, Winnipeg Tag
3. Dextrine Gum, Ottawa Tag OP-4 ( 4mm)
4. PVA Gum
5. PVA Gum, Winnipeg Tag
6. PVA Gum, Ottawa Tag OP-4 (3mm)
7. PVA Gum, Ottawa Tag OP-2 (3mm)
1. Dextrine Gum
Cylinder 1
Cylinder 2
Cylinder 3
2. Dextrine Gum, Winnipeg Tag
Winnipeg tagging is discussed in the "Postal Mechanization during the Centennial Period" post.
3. Dextrine Gum, Ottawa Tag OP-4 ( 4mm)
In 1972 , a facer-canceller machine was installed at the Ottawa Post Office that relied on the detection of fluorescent compounds. (Fluorescent substances emit light only during exposure to UV radiation whereas phosphorescent compounds (Winnipeg coating) emit light during and after exposure to UV radiation.)
The General Electric Company produced a fluorescent compound which was applied to stamps sold in the Ottawa area.
The first compound designated as OP-4 migrated and its use was discontinued. OP-4 was replaced by another compound OP-2 which did not migrate.
Ottawa to London, July 24, 1972
OP-4 tagging
OP-4 tagging
4. PVA Gum
Cylinder 4
Dextrine gum (l.), PVA gum (r.)
5. PVA Gum, Winnipeg Tag
Winnipeg, July 25, 1972
6. PVA Gum, Ottawa Tag OP-4 (3mm)
(not Shown)
7. PVA Gum, Ottawa Tag OP-2 (3mm)
Cylinder 5
Cylinder 6
Cylinder 7
High Fluorescent paper
High Fluorescent paper
April 6, 1973
First Day Covers
Canada Post Office
First day covers were sold to collectors for 20 cents + face value.
Kingswood
Jackson
Rosecraft
Cole
