Although the history behind the invention of the fusee is not known, some give credit to Leonardo da Vinci based...
Pocket Watches
Brand Elgin Grade Number 418 Jewels 7 Size 3/0 Beats Per Hour 18,000 bph Winding Type Pendent (crown) Setting Type...
Brand Elgin Grade Number 70 Jewels 15-17 Size 18s Beats Per Hour 18,000 bph Winding Type Stem (some key-wound?) Setting...