Those Striking 10th watches are fantastic, well done on a good buy. Two things that bug me about older Zeniths are the date not at 12, 3 or 6 and the size of the case. I like to think that one day I'll buy a Hamilton Chronomatic reissue, an 80th birthday Carrera or one of the modern Tudor Snowflakes (or even a Tudor Heritage Chrono, one of which I owned for two short weeks) but really the Zenith is the the only modern watch I would sell some vintage pieces for. I've seen one in action, that main chrono hand is something else.