Bright white LED board made for Bally Gaming Inc, has 9 blinding white LEDs was made to light up 3 at a time (however you can also make all 9 LEDs light up at same time).
Pin 4 is (+) common and Pin 1, Pin 2 and Pin 3 are (-).
Connect Pin 1, 2 and 3 together to cause all LEDs to light up at the same time! We are not sure of the actual design voltage however we were able to operate it in the range of 5 to 12VDC.
Size about 11.75" x 0.83" wide. These have one male connector on one end and a matching female connector on other end to allow more than 1 board to be connected together. These appear to be new.