Rockola did make a 45 rpm bubbler. Copy this link and paste it in your
address bar http://www.crewcut.com/how/rockola45bubbler.jpg and you will
see a picture of the Rockola Bubbler. I took this picture at the coin-op
show in St. Charles (Chicago) last weekend. An AMI mechanism is used in
the Rockola cabinet. The rockola bubbler was discontinued about 10 years
ago.