I recently picked up an old Versatec 8536 electrostatic plotter at a Hughes auction. When I inspected it, all the disks were there. A week later when I picked it up, as you might guess, all the 3.5" disks were gone. I am now looking for a set of disks to copy or purchase. Call Mike at 323 462-5772 or email mikeparadiso(a)worldnet.att.net