This watch is a unique connoisseur's masterpiece. It is 1 of 1, handmade to a custom order by Armin Strom, the father of modern watch skeletonization and a master engraver, before he retired and sold his company to the present owners, where he remains as a consultant. He holds the Guiness world record for the smallest skeletonized woman's watch. For more background, read here. https://en.worldtempus.com/watch-brand/armin-strom-4 This watch is made from 4.5 ounces of yellow gold and silver with 104 single-faceted diamonds. The crystal is beveled for an interesting effect. Armin Strom;s signature is faintly visible in the extreme closeup photo at the 12:00 position in gold script applied to the underside of the crystal. Almost every visible internal surface is elegantly engraved. You can distinctly see all the layers of the movement. The case is 38 mm and the band is approximately180 mm circumference. The watch is in excellent condition. The only exception is faint surface scratches on the clasp and adjacent links.