Glass is clean. Aperture works smooth.
It's main sin is it's just ugly. The original rim that said Kodak Ektar etc. etc. is gone. Only remaining evidence is the standard Kodak serial number. EE10979, and that it looks like an ugly old 2.5 Ektar.
I'll offer a satisfaction guarantee. And yes, it has a ring with matching threads to hold it to a lens panel.
$185.00 Join the club of mega shallow depth of focus folks!