So that’d explain why Lincoln’s part and mole are on the opposite side. ............... Yes, as noted, but did he become a Lefty? All the photos are facing the same way, and the hair parts are the same, but the mole moved, that’s what I was trying to point out. Notice how clear the earliest photo is? I have Civil War tin types and they are not as clear as the earlier model. One of a Confederate drummer boy is on the light side.(NO! DON’T EVEN ASK, ITS NOT FOR SALE.)
As I recall, daugerreotypes were VERY fragile, but those that were properly preserved over the years display a remarkable clarity. They were produced on glass plates, and the image had to be immediately preserved (the image showed on the back of the glass).
If you can find it, check out “The Daugerreotype in America” by Beaumont Newell. I found the book at the Old Fort Tejon gift shop in Fort Tejon, in CA. I really got a heck of an education from that one. I had an olt-time photo shop a few years back, and I was studying the poses and lighting techniques. Fun!
BTW, I can’t comment on the mole... :-) (Although it looks a little high to me. Maybe there were more than one — I dunno.)