Fleurer was known for their high quality movement, and their tiny caliber FEF 6630 from the 1970s makes no exception, although at first glance it looks no different than all the other millions selling tonneau shaped form movements for ladies’ watches, like a AS.
The first positive surprise is, that not only all important bearings contain rubies, but also the minute wheel bearing. The 17 jewels could be achieved that way without the need for cap jewels.
The gear train is the classical one with directly driven center minute wheel, third wheel, seconds wheel and a pretty large escape wheel.
The very fine teeth are noteable.
Of course, a swiss pallet lever escapement is used, and the balance wheel is made from Glucydur, has no screws and is beared in two Incabloc shock protections. It beats rather fast with 21600 A/h. A little downside is, that it can be regulated only directly at the hairspring key and not with an elaborated fine adjustment system.
The imprint “Spring.No.Out” is interesting, as it should indicate the watchmaker not to open and service it, but to buy a replacemenet part instead. This was pretty common for high quality movements at that time.
On the dial side with its stripe finish, you can see the winding system and the Incabloc shock protection. Almost all tiny tonneau shaped movements for ladies’ watches at that time offered the same view on the dial side.
|Size:||5 1/2 x 6 3/4''' (measured: 13,2 x 15,2mm)|
|Number of jewels:||17|
Glucydur anular balance (three legs)|
|Balance bearing / direction hairspring:||Counterclockwise|
|Adjust mechanism:||Hairspring key|
|Construction type:||solid construction|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||2 hole(s)|
Flume: K3 N1 -|