The next type of machine dispensed the bottles one by one and was less likely to jam or malfunction. A popular maker of the early vintage Coca-Cola machine was Vendorlator in California. In the mid 20th Century they had a large market share. The Vendorlator 33 had a strange top opening and was quite small holding only 33 bottles. Other models were bigger than refrigerators. Vendorlator made machines for Pepsi as well, but rival Vendo made only Coca-Cola machines. Most early coin machines were nickel machines, and you needed an actual nickel coin. As they became more sophisticated, some could make change, at first only from a dime, and eventually for other coins and, in modern times, even for dollar bills. For most, changing the price was pretty much impossible. Bottle vending machines were supplanted when canned soft drinks became available in the 1960's. Cans were less likely to break than bottles, chilled faster and needed no bottle openers or cap receptacles.