He should have used Susan B. Anthony dollar coins instead. But they would probably claim they were a quarter.
Years ago I stopped at a convenience store for a pack of smokes and asked for a roll of quarters, too. When I got to the car wash, I found out it was 50 SUe B’s. Later I returned to the store and asked the manager if any of his help had been abnormally short in the past few days. Nope, he told me and I continued on my way.