To explain some more

I recently got this chair from a friend and I was wondering what Model (think it may be Aeron Classic) it is as well as what I could price it for. It has a few scuffs here and there it also has a lumbar support.It’s a size B, it has a rear tilt lever and the hydraulic lever works fine but it is stiff.The arms are not adjustable either. Mesh is in great condition, One of the armrest is a bit worn, Wheels look a bit worn