Hello, I was looking at a byf42 and the barrel was throwing me off. Where the serial number is, is a single #4. The fp looks like a Weimar eagle, but it looks different, maybe a depot mark? It seems like I have seen one on here before but don't remember. The barrel code that I can see has a G 107 with a smaller 40, so 1940? I don't see a 0'2 stamp. I'm wondering if this is a sporter rescue with a replaced barrel. Any thoughts?