I came across this machine in my area on ebay It didn't sell maybe because of location pick up so I made a deal to check the machine out He only wants 300 for it but I have no idea what to look for when I do see it I have been told the locks need to be changed but the person who has it does not no the first thing about vending machines so If any one can help me find out what model dixie narco it is I may be able to search it and find out more second what issues should I look for in a used m