Thanks for the photos. The finish appears to be original and very well preserved. The sand blast mark on the receiver is strong and the shadow at the point of barrel/receiver joint is also there . I have a 5.4 (8/44) that is almost sure to be original that the finish isn't as good as that one. I think that Inland started to speed up and allow the quality to slip toward the end. They did request and were allowed to use barrels that were formerly rejects but would work fine according to the rules. My barrel looks like a 45 barrel, shallow rifling and not from being shot. That is a really nice unit you have there. Thanks
D