Eszeha Watch Case, Unmarked Movement, Help!

[navdoch2o]

Today I found an interesting ladies watch at a garage sale. Figured for a couple bucks it was a good deal. The Watch case is a ESZEHA which I know is tied into some well known names. The case is platinum..yay!, but what I need help with is the movement. The only thing marked on the movement is A F R S and what looks like Mnnnn underneath it. Anyone seen anything like this before? Unfortunately someone previously removed the diamonds from the lugs but I'm more interested in a year and story with the movement.

 

[GibH]

AF RS isn't the name of the movement. It's for the regulator:
My Blog: Regulators

If nobody here can answer you, try the forums at watchuseek.com

ESZEHA were made by Karl Scheufele from what I could find doing a quick search. That could be quite valuable.