SH1 chesscomputers: Yes, it needs a fairy to magically deliver one to Sean. Then hoping he can figure out how to dump it.

Others on the top of my own wishlist. Not that I'd personally play them, but great to have them preserved/emulated:
- MB Grand Master (Milton Bradley robot)
- CXG Accolade/Concerto/Legend, each have the same ROM probably
- Saitek Brute Force module

Not chesscomputers:
- Novag Gomoku. Berger had received one for repairs, and it really sucked that the broken part was the EPROM chip.
- Novag Xiangqi newer versions that likely have a H8 MCU

It would also be nice to have a complete set of GGM/MGS modules, I think the only ones remaining are Borchek and Master Kriegspiel.
More dumped modules for Intellect-02 would also be nice. I know a Kalah module exists, not aware of others.

I did not include prototypes/tournament chesscomputers, or unbelievably rare stuff like L'Empereur in this post.