Isco Gottingen Tele-Westanar 1:4/180mm lens made in Germany. This lens is for M42 screw mount cameras. 

This is in good vintage condition and fully working. Clear optics. Aperture and focusing is smooth. Comes with front & back caps. 

All vintage lenses can be used with modern cameras with appropriate adapters. 

Light dust inclusions are expected on vintage lenses due to age which wont affect the quality of the pictures.