This is a SOLD OUT and very rare watch. This watch has an 18k white gold case with a blue alligator leather strap, fixed bezel, copper blue dial with rhodiumed gold luminous hands and index markers. Centered main dial. Shock-resistant balance, sapphire crystal. Case back is Transparent. This model is the most unusual, for rarely does Lange produce dials in uncommon finishes. Made of solid silver, the dial base is coated with goldstone, or aventurine glass. Originating in 17th century Venice, the material shimmers with tiny sparkling specks, actually tiny copper dioxide inclusions in the glass. The watch measures 39mm in diameter and fitted with Lange’s thinnest movement, the hand-wound calibre L093.1 with 72 hours power reserve.