cutlass

I was shopping at a local thrift store and found 4 2600 games that caught my attention. They each have white end labels on them in Combat cartridge shells. I purchased them and came home to see if they worked. They all work and are what the what label says they are: Air Sea Battle, Night Driver, Breakout and Missle Command. I opened up Air Sea Battle and took some pictures. I also opened up and took pictures of my normal copy of Air Sea Battle to compare the differences. Any idea if these are pirate carts? Gameplay of Air Sea Battle: