Calibre 1222 specific features

Hello all

I've been trying to find valid information about certain features of cal. 1222 used in the Malte Tonneau Dual Time and OS Dual Time, but with no luck.

Could anyone share with us information on whether ceramic bearings and a freesprung balance are utilized in this calibre?
I thought this calibre didn't use any of the above, but there seem to be contradicting views. I've read that ceramic bearings/f-s balance weren't used in the past, but now these features have been implemented.
Is that the case? Can you please offer some insight on the matter?

Thank you in advance
The cal 1222 does not have a free sprung balance but does
11/18/2008 - 17:28
have ceramic ball beating for the rotor