The top board on my Wurlitzer 2150 is held in place by several screws. The back 2 screws also have ~2 inch leaf springs (for lack of a better term), which press against the board. I have to believe these were used to hold cards in place, much like a pinball machine has a place on the front apron to hold instruction and pricing cards. However, I can't seem to find any images of this, or similar jukeboxes are using the clips to hold anything down. So, I am curious as to their purpose (maybe some completely other purpose). And, if they did hold down a card, what did the cards typically have on them?
Thanks
Brooks