Face is marked:  SIMPLEX, Simplex Time Recorder Co. Gardner, Mass.  USA

Metal tag is marked the same with Patent # 2,102,771.

There is a note with it that says Model TCF1R4   and serial # 134413/2/51  but I don't see them.  Maybe they are inside.

I'm not sure how to take it apart. Came from storeroom of Clock collector.

Plugged it in and the clock worked overnight keeping good time. When you push in the shiny plate on front it stamps inside. Will need a new ribbon.

There is no key.

All in solid condition. We have not tried to clean it up.

Thanks for looking.