I forgot to ask the third question:

3) When did they switch from checkered walnut to brown Bakelite or plastic with the 1911A1? Was it during the war?

I actually like the stock GI brown plastic almost as well as the checkered walnut. I tried Pachmyer's when I carried a 1911A1 (Auto Ordnance) for a couple years on the Sheriff's Office in the 90s, but went back to stock, as they felt better to me.
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