not sure
Looks to be a 70's model but just fyi crown royal machines are much more rare and worth alot more. With that beeing said unless it is embossed which it dosen't look like it, It would be super easy to change to anything and it is not a collector model for sure so have fun with it. Does it have to be correct you will spend more making it look good then you will ever be able to sell it for. I'm also near positive pepsi and coke probably both used it because to date I have never seen a machine made exclusively for crown. I only know coke and pepsi to have special machines made for them and only in the last 10-20 years.