Thread: Cards with a "mk" qualifier (owner's stamp)
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Old 04-16-2007, 02:32 PM
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Default Cards with a "mk" qualifier (owner's stamp)
Posted By: george gogol

Keith,
I have seen several Piedmont's with the zero, of "150" or "350," filled in with a tiny purple stamp, really odd. I actually at one point thought it must be factory, because it doesn't appear to be ink or a marker. After close observation it does appear to be a stamped dot.

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