These Westminster chime, one weight and two spring 3314X wall clock units usually have 8 (4 4) hammers on the back unless its side strike, if side it will have 5 hammers on the side.
The CM number will be stamped on the unit such as 81 R 65cm or 3314X.
That first number is the date of manufacture, the RWS is the series, and the CM is the pendulum length from the top of the movement and down.
This high quality German movement comes pre oiled and includes its cables, pulleys, leader, suspension spring and hand nut.
Removal of this movement is easy and we provide instructions for the installation. This movement is in stock and can ship today. We are full time clock makers and retailers both, so if you need any assistance with install we can help.
Replacing a movement is less costly than a overhaul. These movements last 25 years before needing an over haul, but since its still being made at a fair price it is so much better just to replace. The clock will be problem free right away instead of months, last longer than a overhaul and its prelubricated.