Invar 18k Gold 50 mm Open Face Pocket Watch. ... Timepieces Swiss | Lot #72015 | Heritage Auctions
Invar pocket watch - Men - 1901-1949 - Catawiki
Bonhams : Invar. A late 19th century 18ct gold Grande Sonnerie full hunter minute repeating pocket watch together with fitted wooden repeat activating boxCirca 1880
Silver Invar Full Hunter Pocket Watch With Chain | 456059 | Sellingantiques.co.uk