Koni-Omega 60mm viewfinder with sandblasted lens

[tim48v]

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?

 

[Old-N-Feeble]

Maybe you can polish it?

 

[tim48v]

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

 

[Kirks518]

It is usable, just foggy.

This...