CAFDC453,469 Unitrade # 453, 469. Canada Post Replacement Cover
Unitrade # 453,469 First Day Cover
EXPO 67 Katimavic, Canadian Pavillion
Centennial of Confederation
Canada Post Replacement Cover
Montreal, 28 April 1967
Chung / Narbonne Specialized Catalogue: R103 combo
Beginning in 1949, first day covers forwarded to the post office in Ottawa which were damaged or lost during processing were replaced with a specially designed cover. Eight different cachet designs are known. The practice continued until 1974.