Money entered: 473 Rubles
Item description: None, pushed “coin return” button after inserting currency. 861 yen deposited into coin return slot.

Well shit, I was just trying to humour the fuck but turns out the thing can exchange currencies? how come no one has tried this before?

Money entered: 861 yen
Item description: Glass bottle of Nuka-Cola, 500 ml. Radiohazard response team deployed.

Subsequent, separate testing with other currencies yielded no coin exchange.

Bummer. Guess it was just feeling generous that time.