Heym SR20
Well-Known Member
Some great photos of a pre-war Zeiss 3-9 Zoom scope. Quality of the engineering is pretty amazing.
http://forums.nitroexpress.com/showflat.php?Cat=0&Number=241604&an=0&page=0&gonew=1#UNREAD
http://forums.nitroexpress.com/showflat.php?Cat=0&Number=241604&an=0&page=0&gonew=1#UNREAD