Love idiots who hoard $2 bills, 1943 steel pennies or unusual serial number bills. Heck, even proof 1943 steel pennies are only worth about a quarter each!
Our bank across the parking lot used to always have stacks of crisp new $2 bills. I used to give my son those to buy school lunches. Sometimes a cafeteria cashier refused to accept them from him because, as rarities, they should be saved and never spent.
Truly rare things are really, really rare.
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