Gunnut - thanks for the warning and I plan on being extremely careful with this gun. By the way, do you have any experience with disassembly of the 42? If so, I'm sure I'll have some questions. Going to really take my time on this one. I was planning on starting this weekend, but my sister just had a baby in nw Arkansas, so looks like I'll be headed up there.
David - I just went to google and did a search for " Winchester serial numbers" and came up with a site where you enter the number and they tell you the date of manufacture. You do have to know the model of the Winchester to search the serial number.