UT6431 ?
Hope you bought this big boy on purpose.
It reminds me my first "hunts" for 6497 in pocket watches auctions:
what a disapointment to receive this big movement, I was sure it was a 6497 on photos...
You are absolutely right… in the meantime since I disassembled the pocket watch in order to work on it, I realized… … hmmm „this is a big one“.
this look of the movement I would like to have one day! complete , clean, with incablock! I have time to buy a240, but no time to finish them I converted already few, but not finished even 90 percent )) yet. you have nice engine with good engravings!
Hope you finish it soon, this my Angelus collection.