Your post was really a great display of how creative Piaget has been in integrating stones and gems into special concept pieces for many decades. As others have mentioned its a shame that most brands do not still incorporate mechanical movements into their jewelry based watch concepts. But it seems the bulk of women buyers do not want to deal with winding a watch (my wife and maybe a handful of other women, including you Daos, are the exception). It seems these vintage cuff pieces never go to auction. Then again, most publications or auction alerts tend to focus on mens watches and specifically on brands like Patek, AP, VC, Breguet and Rolex.
As you know I'd love to see Piaget release some new pieces with stone dials, maybe a mens square or rectangular Altiplano with a lapis dial or one using both onyx and malachite.
Thanks for your kind words about my posts. Its always a pleasure to visit the Piaget forum. I've been a bit distracted lately but its good to be back.
Best regards,
Dino