Koni-Omega 60mm viewfinder with sandblasted lens

Just picked up a Koni-Omega Rapid rangefinder with the 60mm, 90mm and 180mm lenses; even had the 2x closeup lens and aux lens for the rangefinder. Everything is in near new condition with one exception: one lens element in the 60mm viewfinder looks like it's been sandblasted!

At first I thought it was just haze. This is the lens closest to your eye and it just unscrews from the finder. I took it apart and the haze isn't haze. It is usable, just foggy. The other lenses are perfect!

Any ideas?

Maybe you can polish it?

Frankly, I've tried some 10,000 grit polishing compound; no effect.

tim48v said:

It is usable, just foggy.

Click to expand...

This...