Bifora 68 CLD / Dugena 709

 
Bifora 68 CLD / Dugena 709

Bifora 68 CLD / Dugena 709

Description

The movement shown here is a Bifora 68, which was although having the same caliber number, available in two different versions: One without date indication, and the other one, shown here, with date indication.

Additionally, this movement was used by Dugena under their caliber number Dugena 709.

It is a noteable movement, since it displays the date but has got no second hand. This is pretty rare to find on other movements.

main plate

main plate

Visually, this form movement is very much appealing due to its red-gold coloring, technically, it was a very modern movement in the early sixties.

The screw-less ring balance is locate in two inhouse Bishock bearings and controls a classical pallet-anchor movement with very tiny gears. They are so small to give the balance and mainspring barrel as much space as possible.

The effective length of the hairspring is set by a long regulator arm.

dial view without date mechanism

dial view without date mechanism

On the dial side, as usually seen on Bifora movements, there’s just a rocking bar winding mechanism used, but the click spring, which is also located on the dial side, is an elaborate one.

date mechanism

date mechanism

The date mechanism contains an indicator steering wheel, which has got a spring mechanism on its top, although it is very small. This allows a semi-fast correction of the date by turning the hands back and forth. On normal usage, the date advances slowly.

Bifora 68 CLD dial side

Bifora 68 CLD dial side

Technical data

Manufacturer:Bifora
Caliber:68 CLD
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): Bidlingmaier (Bifora)
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Winding mechanism:rocking bar winding system
Setting lever spring:2 hole(s)
Features:QG,RDR
Functions:hour, minute, day
A/h:18000
Size:6 3/4 x 8'''
Production period:1957 - 1967
Literature: Flume: K2 -

Usage gallery

Dugena Calendar ladies' watch

Dugena Calendar ladies' watch

Links