MB Electronic battleship versions: 1977/79: uses 2 9v batteries, a tms1000(?) cpu, no codebook/instant programming, higher pitched sound; game has a RED light bulb *below* the ship in the 'ship' lower backdrop which is clear/untextured, and the text next to the white switches on each side (FIRE, ON/OFF, LOAD/GO) is painted white
I got the original version for Christmas in 1977. Out of the box, it didn't work and my step-father had to take it apart and reflow a bunch of the solder joints to get it working. It took far more time to program it for a game than it did to actually play the game afterwards. Not even remotely fun.