Prakticar Auto Zoom 3.5-4.8 / 35-70mm
35-70 zoom lens, given by one of my customers.
It is not easy to know who made this. While searching on Google or eBay, I found it with the brand names: Minolta, Nikon(!), Vivitar, and Zuiko (Olympus), in this last case almost identical to this one;
I don't remember using it, I prefer the Sigma-made one.
On the place where I stole this image, they say it is made by Cosina.