A Redfield 3200 will fit on to those dovetails on the barrel of your Win 52. Try to find one with redfield rings, the original rings have knobs and just require a coin to tighten to the base.
I found lense caps on Gunbroker. They are being made new, cost $40.00
I recommend a scope in the 16X to 24 X range. I have been using a 16X Redfield 3200, I can clearly see what I am doing at 50 yards, for shots at 100 yards I need to use my spotting scope to pick the last round out of cluster, but I can see all the rings and I can see the grass moving left or right of the target.
You can find these on gunbroker.