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fkwI had always thought these Pinkerton Photo postcard/scorecard cards to be issued later than the 1912 T5's, but I just recently picked up one of King Cole #203 (blank back) that was used as a postcard, and has an Aug.11, 1913 postmark on back. So Im sure these cards were issued far earlier than the late teens. They were most likely issued over a few year span. Hope that helps a little. If anyone wants a scan of it let me know. Frank