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Keywords: stamp errors, Silver, APS, American Philatelic Society, coil imperfs, Scott 1618, Liberty Bell, imperf, Adlman, GAMM Covers, Holmes, EFOCC, Hotchner, 1969, Christmas precancel, precancel, Scott 1384, 1972, SPA, Faries, Rubin, Mail Order, Scott 1468, misregistered, two tailed cat