Welcome to the site. I wouldn't worry too much about a 300. When you figure it out post some pics, there were 3 models in 1950, an EG, an F and an R. Oops, there were only 2 models in 1950, the F didn't come out till 55, Joe.

I'm not greedy, I just want one of each.

Remember Ira Hayes

JoeMartin