This is a pre-production cart. These are normally used for evaluation or marketing purposes before the production carts are available.
The ROMs have been dumped and are identical to the production version.
This and the Atari home computer version are the ones that started it all. These are the original versions that all the others are a port of.
We are missing the warranty card for this! If you have it and wish to donate it to the Miner 2049er Museum, please reply to this post! We’ll even accept just a picture if you don’t wish to part with yours.