Even though I just acquired a beautiful Fender American Original '50s Stratocaster, I'm still in the middle of a '55 Strat replica project. In researching & sourcing parts, I've learned some interesting but trivial things that are sure to interest anyone with a little OCD:
The Kluson tuners originally installed on the Stratocaster had no name on the back.
The 2nd iteration had the name "Kluson" stamped vertically on the back of the gear housing.
The 3rd had two lines stamped on the housing: "Kluson" & "Deluxe".
I'll try to post some pictures as examples & anything else I find out. Feel free to add your own info.