Buren 35

 
Buren 35

Buren 35

Description

This “Grand Prix” movement from Buren is a pretty old form movement, probably from the 1930ies. It’s high quality can be seen on the stripes decoration and on the bimetal balance with screws. Bimetal balances were not often used in tiny ladies’ movements. They reduce the running errors, which occur due to temperature changes to a minimum.
An interesting detail is the missing color on the “R"etard/“S"low marking of the balance cock. What might be the reason?

Technical data

Manufacturer:Buren
Caliber:35
Size:5 1/2''' (measured: 13,0 x 19,1mm)
Height:3,83mm
A/h:18000
Number of jewels:17
Escapement:Pallet lever
Balance types: bimetallic screw balance
Shock protection(s): none
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
References: Ebauches: 1949 II 32

Usage gallery

Büren ladies' watch

Büren ladies' watch

Other movements from Buren