My guess is that was some hand fitting at the factory. It's an interior surface that doesn't show. And as Jinx and Tyrod wrote above, it looks like the work was done before the serial number was stamped. If we had a photo of the yoke to frame closure and it looked like a good fit, I'd be more confident in my estimation.
Last edited by Ashlander; 07-16-2017 at 01:27 PM.
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