Waltham bought in several different movements to use in their electric watches.

This first one uses the French LIP R 184 movement.

This next watch I bought unseen from Tom Mister at http://www.dashto.com/; I bought it because it was listed as having a complete, but non-working, Landeron 4750 movement.

I think it cost me US$45 and I had no idea what the dial looked like. Boy was I pleased when this beauty turned up! The dial is absolutely spotless and it didn't take long to get the Landeron 4750 sorted!