Bakelite (Plastic) Grip ID

[CJS57]

Since Marc's grips came on a Shatuck gun that could not have them on it originally, and since they were painted black, then whoever fitted (whittled) them to fit Marc's gun well after WWII has no bearing on the originality of the grip itself. As far as poor quality goes, that is what last ditch is all about, get it done anyway you can! Anyone seen last ditch K98's from Mauser? I have and you have too!
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About the right grip being a poorly cast copy of an original grip. Problem with that theory is that it doesn't match any of the known right grip patterns inside! So just what grip did they use to make the repro casting mold? To say Marc's (and 3 known others) is a repro cast from a mold made by an existing grip doesn't work, because then there should be a known original grip with this pattern inside and there is no such grip!