This very nice Japanese-made 135mm f/5.6 Komuranon-E 4x5 enlarging lens is surplus to my needs. The glass is clean and clear without fungus, or haze, or any marks I can see, but there are a few inconsequential motes of internal dust. The aperture mechanism works smoothly. It's in its original protective plastic case. The lens body has what appears to be a 45mm mounting thread and comes with a matching reducing ring to support the standard 39mm mount. You'll need to supply your own 39mm retaining ring, or use the reducing ring as a retainer on a lensboard with a 45mm hole.
My asking price of $55 includes PayPal fees and shipping to your US door. US sales only for now, international shipping is expensive and glacially slow in these Covid times - in early March I received a couple of items shipped to me from eBay sellers in Germany in late October!
Sorry about any surface dust in the pictures. I don't live in a dust-free universe and no matter how often I blow it off a few specs manage to arrive before I can release the shutter.