Vintage enlarging lens in very good condition. Some cleaning marks but no serious scratches. No haze or fungus. Really nice 16 blade diaphragm that delivers almost a perfect circle. The aperture ring moves smoothly. The ring does move a bit front to back, but has no impact on function. Not sure of exact thread size; I measure approximately 50mm. Front cap.
$20 plus actual shipping. 10 day return privilege. % to APUG.
(Sorry for the AF artifacts in the photo)