Sure - I originally found it on this old auction page here:
Do you think you'll be able to find the graphics somewhere? I'd hate for this not to get made after finding all of the documentation, as it's likely the only way that I and anyone else interested will ever be able to play these games (these watches sell for several hundred dollars on EBay, which is kind of a lot for what it actually is.)
I hope that you'll be able to make these with all of the information I've given you so far, and that you'll be able to find the rest either online or with the help of someone else here in the community.
https://www.worthpoint.com/worthopedia/1990-nintendo-mario-bros-game-watch-18709...