Just got this a couple of days before Christmas - running a respectable -2. (I really love the 5100 movement...some people sneered at the use of nylon and resin parts at first, but these are amazing work horse movements. I think this is my 5th watch to house this simple but robust machine)
Engraved on the rotor below the brand name is the word 'Chronometer' - I know Sinn has SOME COSC certified watches and put that info on the dial as most companies do, but I've never seen it 'bragged' on a rotor. Is it likely that Sinn actually submitted these movements to COSC but only noted it on the rotor?
Finally, inside the case back there is a symbol and the number "95" stamped below - would this indicate a 1995 production year like Omega used to do?
Thanks in advance!