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Previously unknown user, just discovered, 12/19/2016, on a John Wanamaker cover dated 12/24/1909. The cover has a clear perfin in the #8 position with blind perfins at #1 and #7 making it a 234569 pattern. The early usage suggests this was most likely a demonstrator machine. By early 1910 Wanamaker purchased a Schermack Mailing Machine with control pattern 5689. |