Grandstand Programable Computer © 197? Grandstand.
Model SD-070
8 game cartridges are known to exist for this system.
PC.501: Supersportic
PC.502: Motor Cycle
PC.503: Tank Battle
PC.504: Racing Cars
PC.505: Submarine
PC.506: Superb Wipeout
PC.507: Shooting Gallery
PC.508: Fundamental