I have all four of the ones you mentioned above along with the open worked double balancier AP. So just for comparison sake let’s compare to the AP, in my opinion the Laurette Ferrier does not even come close to the AP, its retail price was in the mid-40,000s and it’s a double balancier! I know we’re not supposed to talk about prices on this website but honestly do you think the LF will ever be worth more and is it anywhere near the Watch that the AP is? Each to their own, at this point in my collecting career I want things that are special and will get more special as time goes on that I focus on that. I think Roger Smith, Kari etc.…Jim