This is a weird one, I bought this at a flea market for $5. It came in a custom printed vhs sized cardboard box that it was mailed in. It's postmarked July 26 1989, and was sent to California from Alabama. I gotta say, it sure does seem to be a cool well digging machine.
I'll try to get scans of the box on archive.org soon, but I gotta censor out the address of course.