>>18467832
I think the ETA 9xx quartz movements all have fully jeweled geartrains. Some may be missing one jewel because of the position of the seconds wheel. Sometimes when you have a central second with the axle passing through a long guiding tube, there is no jewel in that tube.
They're being replaced by the Fxx family of movements which seem to be missing jewels on the third wheel, judging from the specs I can find.
>caliber spec sheets can be downloaded from the different caliber page on boley.de
>in case you're curious