I have a Nikkor-W 300mm f/5.6 lens in excellent condition for sale. It's in a Copal #3 shutter--the speeds are all accurate and the controls all move cleanly and crisply. It's missing the little plastic knob on the aperture control lever, but that doesn't affect the use and the part is easily replaced. The glass is in nice shape, the rear cell is pristine. There are some small rub marks in the center of the coating on the front cell that look like they were caused by a little rubbing of the lens cap. I had a hard time even getting it to show up in a photo. The lens comes with the front cap, original retaining ring, and the ring spacer.
This lens throws a crisp, bright image on the ground glass and has plenty of movement on 8x10. This is a serious piece of glass that would make a great primary lens for your 8x10. It would also make a nice portrait lens for 5x7 or 4x5. (pictured Toyo board not included)
$350+ actual shipping