INDUSTAR 61 L/Z MC 50mm f2.8 MACRO lens.
M42 screw mount.

Lens is in very good condition for its age. See the pictures, please.
No damages, no heavy scratches on glasses. Some dusts, light fungus and cleaning marks - pretty common for any vintage lens and usually have no influence on photos.
Aperture works fine.
Focusing is smooth.

TESTED! The last picture was made with this lens and my Nikon D3000.
*Nikon D3000 camera is not included.

With proper adapter you can use this lens with new digital SLR or mirrorless cameras (Canon, Nikon, Pentax, Sony, Olympus, Samsung etc.).
For $20 more i can add M42 screw mount to Nikon or Canon adapter.

Any questions - please ask. I'll be happy to help.