my dad passed away and I found this old 8mm. It has 1940 on the top of the barrel. It has two eagles on the barrel and the joint of the barrel and the bolt. the barrel #is 4983 and the bolt front is 4983. Under the gun on the bottom plate two #'s 4983. The bolt is bent and has #7520. Metal but plate 1/2 to 3/4 inch thick. Any idea what I have her.