These images are posted here with permission of the owner, Alex83, who has the watch for sale on this site. My question involves the use of jeweled roller bearings on the rotor, which I've never encountered before and find quite interesting. Obviously other methods proved better/more reliable over time, for I have seen no "modern" calibre that sports such an approach. But a little history, here, would be interesting. Any takers? (My thanks in advance. FH)