Vintage Chess Computer - Chess Challenger 7

Vintage Chess Computer - Chess Challenger 7 Introduction

Vintage computer chess game, a classic from the 1970s - 1980's. Two separate games, both working, but I could only find one DC adapter, 9v, 500ma. Both have all original pieces. There is one set of original documentation and one solid wood carry case from the 20th century into which both consoles fit. No key for its lock.