Values on Camshafts

I have following three cams left over from builds:

Potvin “400” for flathead.
What information is needed to correctly identify exactly what it is?
It says “400” on the cardboard tube on the cam.

Model B banger cam in nice condition.

Model A early 5 bearing cam. Also in nice condition.

Any help with identifying and a value would be of great help.

All three will be for sale

Thank you

 

Not my info, it’s from a post by @mgtstumpy , this should help you.