Lost lens

Damn. Moved to a new home a couple of years ago and over the last two weeks I built my first permanent darkroom. I've found all my equipment - except my 50mm Nikkor enlarging lens mounted to its lensboard. I'll have to make due with my 75mm for printing 135 film until I can find a replacement.

You will find it as soon as you have its replacement in your hands!
If you haven't unpacked everything, look to see if you put it in with something un-related - like a development tank.

I have an unused EL-Nikkor 50 f2.8 lens. No mounting board but standard 39mm thread. Yours if you want it.
Edit: Can’t remember how to do PM’s
Double edit: Just dug it out of my box o stuff. Actually mounting threads look smaller than 39mm, not sure of the size and there is no jam nut on the lens. That’s probably why I never tried it. Have a 50mm Fujinon enlarging lens that works fine.
Triple edit: Well this is embarrassing, just used the calipers on the mounting threads and they do indeed appear to be 39mm after all. Visually they just seemed so small.