OP

Quoted from avspin:

No copies are being made. Everyone is a one of a kind. I have yet to find an original and a blueprint to go with it. Except as noted for pinball circus.
I listed today the coffin mech for scared stiff. It's a blueprint that has been signed off on for production. I'm sure there was an original pencil but I have not found it and it may not even exist anymore. But once it's sold that's it, no more.

OP

Quoted from avspin:

I have originals pen/pencil on velum & mylar, blueprints on velum & paper. I'm only selling drawings that were used in creation, production, design, approval, etc. If there is no hand written notes, annotations, corrections, or signatures they will not be sold.
I really think these are collectible. The process of creating a pinball machine is very labor intensive and having an actual working drawing can bring you closer to that process. For me there is also emotion. Holding something that created the game I've been playing is special, at least to me.