ETA SA DHORLOGERIE-DE-FONTAINEMELON-97

The FHF 97 is a manual-winding mechanical movement manufactured by Fabrique d'Horlogerie de Fontainemelon, which became part of ETA SA in 1985. It operates at 21,600 vibrations per hour with 17 jewels and features Incabloc shock protection. The caliber, also known as the Standard 97 or ST97, was produced as part of FHF's line of affordable "Standard" movements manufactured until the 1980s. It was fitted in various entry-level Swiss watches before being discontinued.