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Old 02-05-2014, 07:31 PM
rck281 rck281 is offline
Join Date: Feb 2010
Location: Kansas City area
Posts: 1,104
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I'm not sure but the barrel roll mark appears to be about 1" forward of the usual position. I know that about 100 in the S170XXX serial number range had this forward roll mark. Very nice!
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