I'm not even aware of the location of the serials, if they should have any. The lens is your best bet - the Zeiss factory books (which allow for identifying each lens) have been reprinted, and excerpted lists (which are generally good enough to date a lens down to one or two years accuracy) are about on the net.
It is on the hinge side of the door on the B/BX. There does not seem to be any serial on my III - perhaps that one received a unnumbered replacement door.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.