Bally Black Pyramid Pinball Original Factory Playfield Engineer Drawing

Description

This is an original Bally factory playfield engineer drawing of the Two hundred Grand Pinball machine (model 0A44).  The working title of Two Hundred Grand was changed to Black Pyramid after artist Greg Freres created the artwork.
A great one of a kind piece of pinball history.
This is a full scale drawing approx 24" x 45".
The drawing is a mix of pencil and ink on Mylar.
In very good condition, some typical signs of storage.  Please see photo's for best description.