I know this is an old thread, but I just obtained a Tele Xenar 360 in a Compur electronic 3 shutter in really fine condition. It is a Linhof selected lens serial # 11,46X,XXX and looks like it was originally put into this shutter. I cleaned up the two contacts and used a new battery and the speeds all work. I like these shutters because they are simple with one mechanical speed that is moderated by electronics from the space age i.e. 1950's into the 1960's and perhaps the 1970's. This serial number is from about 1970.