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Bifora 91


Bifora 91Bifora 91


The midsize Bifora cal. 91 was used a lot in the 60ies and 70ies. It was vailable in two versions, one with fully integrated, indirectly driven center second and the other with a decentral small subsecond. Both versions use the same plates.

Like many Bifora movements, this one uses a Bishock shock protection system. It can only be found in Bifora movements.

On the dial side, there's a yoke winding system.

Bifora 91 dial sideBifora 91 dial side


 Technical data

Number of jewels17
EscapementAnchor with pallets
Shock protection(s)Bidlingmaier (Bifora)
Balance cock directionclockwise
Hairspring studmoveable
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Center wheel
Third wheel, Center second pinion
Mainspring barrel
Winding mechanismyoke
Setting lever spring3 holes
FunctionsHour, minute, second
Beats per hour18000
Production time1962 - 1980
Image in Flume Werksucher K3 18
Bifora 91BiforaBifora911962 - 19809 3/4''''''Bifora 9117 Jewels, 9 3/4'''''', 18000 A/h, SCI


Usage gallery

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