I received a collection of equipment from my grandfather when he passed away, and in amongst it was a Carl Zeiss lens. I am unsure about it, and was wondering if anyone had any information about it. I couldnt find it on the database.
The lens is a Carl Zeiss Jena Nr. 126966 Planar 1:4,5 (f= or R, unsure which it says) 7,5cm DRP 92313. with Serie 1a Nr.4 on the base.