Mamiya Sekor 90mm lens parts (for the Universal, 23, or Super 23 cameras).
Lens elements have some scratches -- I was going to make a loupe out of these but never got around to it.
The shutter does work, but I scavenged the f-stop selector ring from it to repair another 90mm lens.
Also comes with the retaining ring.
$15 plus shipping (probably $6).