The glass is clean but this lens has been disassembled

The aperture ball bearings started to fall out so I disassembled the lens to see what was up,

I haven’t tried to reassemble this yet

The parts are all still there and it’s undamaged

You just need to build this, please only buy if you’re an expert, it’s very difficult

The lens helicoid is untouched and functional, the aperture works, there lever system needs to be assembled and the mount put back on