I found this PCB in a Cocktail Arcade Machine (midway Cocktail machine). It has 2 connectors (one has 36 Pins, the other has 20 Pins) as well as a 50 Pin Connection between the two boards.

The lower board has the size 122"x104"/310mm x 265mm, the upper board has the size 83"x104"/210 mm x 265 mm.

As manufacturer, I found the Name DECO on the board. The game seems to be a 2 Player board, there is a handwritten (game) Name on the upper board starting with a capital B (see Picture #3).