Agfa Colostar N 80/4.5

‘F-Series’ Heliar lens fitted to Colormator rollhead printers, Variograd belt copying machines and other Agfa industrial imagers. Optimised for 3.5x magnification. Low serial, all silver versions have same tooling/casing as Steinheil enlarger lenses. High serials have large black aperture rings. No aperture markings. Focal length handwritten on rear.