The FHF-Font 691 is a notable vintage mechanical watch movement manufactured by Fabrique d’Horlogerie de Fontainemelon (FHF). It is a manual wind calibre broadly used in form watches with unique technical specifications and spare parts availability.
Key Features of the FHF-Font 691 Movement
Movement Dimensions: 6.75 x 8 ligne (approximately 15.3 x 17.8 mm) with a height of 4.2 mm.
Jewels: The calibre features 17 jewels that aid in reducing friction and wear in the gear train.
Frequency: It operates at a frequency of 21,600 vibrations per hour (A/h).
Power Reserve: The movement offers a power reserve of about 48 hours.
Center Second Hand: This movement is based on the common FHF 69 calibre but enhanced by adding a center second hand. Due to limited movement space in form watches, the fourth wheel drives an additional wheel atop the main plate to control the center seconds pinion.
Spare Parts for FHF-Font 691
Winding Stems: Original winding stem (Part 401) fits the FHF 691 among other calibres.
Small Components: Includes winding shafts, tirettes, tirette springs, mainspring gears, staffs, and other essential parts.
Availability: Many spare parts are available in original packaging and for purchase online from specialty watch part suppliers.
Pricing: Prices vary depending on the part, with winding stems typically starting around €6.95 and springs around €7.50.
Custom Orders: For parts not listed in common inventories, suppliers often accept inquiries to find specific FHF calibre parts.
Importance for Watchmakers and Collectors
The FHF-Font 691 calibre is valued for restoration projects, particularly in vintage form watches where precise and rare parts are essential.
Its manual winding mechanism and center second complication make it both technically interesting and collectible.
Reliable sourcing of genuine spare parts ensures movement longevity and authenticity in repairs.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
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