NEMA 1-15 and 5-15 connectors are sometimes used on 220-240V outside the United States.
It was quite common for imported Japanese hi-fi equipment built in the 1960s/1970s to have 1-15 receptacles fitted on the back for tuner, turntable etc.
My brother has a 220V toaster oven he brought back from the Philippines which has a standard 1-15 molded plug/cord set, so presumably it's quite common over there.
