Your Illinois might be a model 3, fifth pinion model? Can't make out the dial on your wrist watch, but indeed a total contrast to the Illinois!
Oh my.... nothing so modern as a model 3! Do you take me for a rich toff! Its a 15j Model 1 Miller, serial number just under 55000..... so about 1874 then.
The fuzzy focused wrist is a '55 caliber 501 Tresor, now that's modern! Its got a rotor that goes all the way round!
as opposed to a key to wind it up.....