Canada #1172d, 1181-1182 45c Pronghorn & $1-$2 Architecture 1988-1991 Wildlife and Architecture Definitives, Combination Usage on Registered Cover to US

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A registered cover sent to the US on March 22, 1990. The $3.45 registered rate has been paid with a single perf. 13.1 45c Pronghorn, a $1 Runnymede Library and a $2 Mcdam Railway Station.

According to Unitrade, the 45c perf. 13.1 was issued in June 1990, but no specific date is given.  This cover is dated a full three months earlier, suggesting that the Unitrade date is incorrect. 

Est $25.