Elgin 687

 
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Elgin 687

Description

The Elgin 687 is a 10 12 ligne (23mm) manual wind movement from the USA, most likely from the 1950ies.

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base plate

base plate

This movement has got synthetic rubies on all important bearings, even for the minute wheel.

gear train

gear train

The gear train is a classical one: The screw balance in beared in two Incabloc shock protection bearings and beats slowly with 1800 A/h. The hairspring has got a Breguet end coil.

side view of the gear train

side view of the gear train

The Elgin 687 does’t have a center second, but at 6 o’clock there’s the fourth wheel, carrying the hand for the subseconds indication.

Escapement- and fourth wheel are located below an own brige, the other gears and the mainspring barrel under a second bridge.

Elgin 687 dial side

Elgin 687 dial side

There’s nothing unusual on the dial side; besides the yoke winding system, you can see the dial side Incabloc bearing.

Technical data

Manufacturer:Elgin
Caliber:687
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): Incabloc
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:yoke winding system
Setting lever spring:4 hole(s)
Functions:decentral second
A/h:18000
Size:10 1/2''' (measured: 23,0mm)

Usage gallery

Elgin Shockmaster mens' watch

Elgin Shockmaster mens' watch

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