Jamma board for the "game" Dottori-Kun, by Sega.

Back in the 90s a quirk of Japanese law meant arcade cabinet manufacturers weren't allowed to sell cabinets without a game, so various extremely basic "games" were made to include with new cabinets. They were intended to be thrown away and replaced with a real game board by the buyer. This is Dottori-Kun - Sega's disposable game board. It's a very simple game where the player drives around a square track collecting dots.

Since these boards were designed to be thrown away, or sometimes returned to the manufacturer for re-use they don't seem to come up for sale that often.

The board worked when used about 5 years ago, but I have since got out of the arcade scene and no longer have the means to test it so please consider it untested.