A couple of counterfeiters made up a batch of $18 bills by mistake. They decided to pass those phony bucks anyway, and concluded that a good place to pass them would be in Vermont. They thought the unsophisticated farmers there would be especially gullible. So they drove up to Vermont, and stopped at the first likely-looking grocery store. One of the men bought a pack of cigarettes, and then asked the clerk, in a casual manner, if he could change an $18 bill. The clerk received the bill without the slightest bit of suspicion, and out of left field, asked the man if he’d like three $6 bills or two $9 bills.
Then, they realized they were not the first counterfeiters who had made up bills with an odd face amount. They had predecessors who had printed extraordinary bills like $6 and $9, and they, too, had chosen Vermont as the place to pass the phony bucks. The unsophisticated Vermonters had accepted those phony bucks without any suspicion, and, surprisingly enough, those phony bills were still circulating among the Vermonters with no problems.