I was given my grandmother's vintage Bulova 14k rose gold ruby and diamond watch. (14k marking on the back of the watch.) The markings on the band read Gemex 1/20-12k gold filled.
Vintage Bulova Watch Band - 18 For Sale on 1stDibs | vintage bulova watch bands, accutron watch bands, bulova precisionist watch band
Vintage 1940s Bulova Watch Ladies Antique Wrist Watch Womans Windup Watch 10K White Gold Watch Speidel Stretch Band - Etsy | Womens watches, Stretch bands, Old watches
Kreisler USA Textured Mesh Band for gold vintage Bulova Accutron Spaceview watch | eBay
Vintage Bulova 12K GF Gold Filled Gemex Genuine Carnelian Chalcedony Scarabs Watch Band - Etsy UK
1957 Bulova Gilda A 10k White Gold Plated Cocktail Watch • Vintage Speidel 10k Gold Filled Stretch Bracelet