Eric, you better able to interpret my ramblings than most!
David, there are lots of details to look for on a Leica I, the problem is that in the heat of the moment, I tend to forget the detail and focus on whether the thing looks roughly right or looks as if it is a collection of parts!
At least most points of interest are easily noticeable and well documented. I find the Contax I, by contrast, to be something of a minefield!
Michael