Timex M74

 
Timex M74

Timex M74

Description

Timex also had a 21 jewel selfwindig movement in a few of their watches: The caliber M74 is basically a M72 with hour, minute and second indication with an additional selfwinding mechanism.

It is also the only Timex movement, I’ve ever seen, which is marked with the jewel count.

Technically, as all other Timex selfwinding movements, the rotor tends to loosen and rattle. It does not affect the winding efficiency due to the heavy weight, but it makes the whole watch rattling while being worn. On that very M74, the mainspring is broken, too.

Technical data

Manufacturer:Timex
Caliber:M74
Number of jewels:21
Escapement:Pin lever
Balance types: Nickel anular balance
Shock protection(s): none
Balance bearing / direction hairspring:Bridge
Moveable stud:no
Adjust mechanism:Hairspring key
Construction:
  • lever, escape wheel, seconds wheel, third wheel, large driving wheel, mainspring barrel
Features:SCD,AUT
Functions:hour, minute, second, selfwinding
A/h:18000
Size:13'''