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Bifora 934 SI

 
Bifora 934 SI |

Bifora 934 SI

Description

The Bifora caliber 934 SI is a direct relative of the Caliber 934, with the difference, that it uses a direct driven decentral seconds indication at position “6” and uses only seven rubies.

This movement is probably a more modern one, since it uses a screw-less balance.

The construction is rather simple but well made with a rocking bar winding mechanism below the dial and an inhouse Bishock shock protection system.

Bifora 934 SI: Bifora 934 SI dial side

Bifora 934 SI dial side

Technical data

Manufacturer:Bifora
Caliber:934 SI
Size:9 3/4'''
A/h:18000
Number of jewels:7
Escapement:Pallet lever
Balance types:Nickel anular balance
Shock protection(s):Bidlingmaier (Bifora)
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Construction type:pillar construction
Winding mechanism:rocking bar winding system
Setting lever spring:4 holes
Features:
  • s (decentral seconds)
Production years:1946 - 1958
References:Flume: 1958 b.35
Hint: The jewel count, the types of balances used, and the shock protections employed refer only to the specimens held in the archive and are therefore not relevant for the precise identification of the movement.

Usage gallery

Bifora 934 SI: Bifora TOP ladies' watch

Bifora TOP ladies' watch

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