Originally, most jukeboxes used a coin chute (a.k.a. mech) four coin unit made by National Rejectors, Inc. (made of gray painted metal). Rock-olas used the 5-10-25-50 cent version. The coin switch assembly had push on terminals so you could swap the various 5-10-25-50 cent switch connections around to use a Coin Acceptors, Inc. (a.k.a. Coinco) coin chute. At the time, Coinco had manufactured two different coin chutes for Rockola. One was a brownish-tan metal unit that took 5-10-25-50 like the National Rejectors one did, except that nickels, dimes, and quarters all came out different exit holes than the Nationals. That's why you could swap the coin switch wires around. The other Coinco chute was made of modern tan Noryl plastic but only took 5-10-25 cents. That's the one currently available today. It's the Coinco 790 series coin acceptor and it's still manufactured today, but in two versions: one for vending machines and one for jukeboxes. Contact Coinco to find out the exact model number you need for a Rockola. I think it's the same one that's used in the Rowe CD jukeboxes.