Assertion: coin | /r/HasProperty | produced for standard collector sets
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Source sentences:
text: Due to the high demand for the $2 polar bear coin (mintages between 1997 and 2001 were as high as 29 million in 2000 alone), the $1 coin was only produced for the standard collector sets that were made available on an annual basis, such as the Uncirculated, O Canada, Specimen and Proof sets.