Ted,
After our phone conversation, I finally recalled the meaning of the 172,28 number. The number is in accordance with the English proof law (189?) and is the number of round lead balls of 7.65mm diameter that it takes to make a pound. The 118,35 is the number for 9mm. Glad you were able to talk your customer out of rebarreling.
(Oops, scooped again. Dwight beat me to the punch)
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If it's made after 1918...it's a reproduction
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