Elgin 687
Description
The Elgin 687 is a 10 1/2 ligne (23mm) manual wind movement from the USA, most likely from the 1950ies.
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base plate
This movement has got synthetic rubies on all important bearings, even for the minute wheel.
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
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
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 |
| Size: | 10 1/2''' (measured: 23,0mm) |
| A/h: | 18000 |
| 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: |
|
| Winding mechanism: | yoke winding system |
| Setting lever spring: | 4 holes |
Usage gallery
Elgin Shockmaster mens' watch