It's funny that you mention a 50's model with a vent rib because what I find myself being drawn to in my internet searches is a 50's model with a 28" modified vent rib barrel.
I'm not really buying the gun just for me. Two years ago my brother in law was killed in a car accident. He left my sister and his two young boys on the farm. They're still a little young to be packing a gun but they dearly love to follow their only uncle and since I'm about the only one to get them steered in the right direction and show them the stuff that young boys need to know I thought it would be nice if I could find a few classic guns that could be theirs when the time comes. Their Dad left a few behind but not all are really suitable. I'm a reloader so I can make a 12 gauge behave until they're big enough to handle it. I already have a few that belonged to my Grandpa but I need a couple more. I think it's a pretty good excuse to keep filling my gun safe lol!