Yes, they are very new, 296xx. Sorry no pic - I have sent them back for repair yesterday. The shop (Hifiheadphones) has been very nice and wanted to replace it but I declined as I don't want to go though long burn-in again. Other than that it works perfectly.
The problem I think is due to the small piece of self adhered white foam got loose and came out of its position - according to Senn. repair, it should be under the ball bearing or something.