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Old 08-27-2009, 07:21 PM
dennis40x dennis40x is offline
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Join Date: Sep 2001
Location: North Carolina
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Default (tested for+p+)

For informational purposes only when S&W introduced the M640 38Spl serial numbers with the prefix of (CEN) were marked per the following: (TESTED FOR+P+). Later production the (Tested FOR+P+) was deleted. The marking appears in the frame cylinder window. I have one so marked. The rational for subsequent models with the marking deleted was there was no industry standard for (+P+) at that time.
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