I have been thinking about getting a 300 mm plasmat for use on my 8x10 field camera.

I know they are big as I already have a 360.

But they don't seem to come up very often. Only a few bargain condition lenses at KEH, uncommon on EBay.

I am not fishing for offers but I just wonder where they are? Were they uncommon in the heyday? I see a lot more 305 G-Clarons and Nikkor M's, Apo-Ronars, etc.