Diamond Watches Collection : AN ART DECO RUBY AND DIAMOND WRISTWATCH, BY OSTERTAG mounted in platinum, circa 1925, with French assay marks and maker’s mark Case signed Ostertag, movement signed Audemars Piguet.

Diamond Watches Collection :

Illustration

Description

AN ART DECO RUBY AND DIAMOND WRISTWATCH, BY OSTERTAG mounted in platinum, circa 1925, with French assay marks and maker's mark Case signed Ostertag, movement signed Audemars Piguet.