What caliber is it based on, part 2.
How about the manual wind 5907? It's powered by a Breguet 510, but what is the base movement for that? Thanks again!
You're on a roll!
that's the same Piguet base, but more heavily modified. The Automatic mechanism has been removed and replaced with the RdM on the back. Some of the bridges are reshaped to handle this. Alliance Horologere (a wiki of watch info) hasa great video of 1151 re...