Ok, I seem to have finally gotten a Conqueror! Devilishly tricky to find at a reasonable price, but here she is, have not received her yet, but that won't stop me posting pics!
Circle on 10AP movt for 1925, case serial seems to indicate 1926. Not the 10AN I was hoping for, the 10AN is an FHF ebauche, while the 10AP is a LePhare. I'm going to do a full resto on this one, it is a keeper, and I don't often say that.