1 Bit Puzzle
Very rare. Bought many years ago. I've never understood this puzzle. If you have answers/solution - please let me know! Solder joint on the battery is loose but can be easily fixed with a solder iron. Still works as-is if you hold the button battery in with your thumb.
Buyer to pay actual shipping - calculated upon closed auction.
I have other auctions active and will combine shipping.
Paypal Only - good luck!