
It is Japanese. It reads "Prince". Could be a gaming token (pachinko?) or from a US military arcade or R&R Hotel (hence the US eagle). Also could "possibly" be an ink stamp or crimp seal as Japanese are fond of collecting the ink or emboss seals as souvenirs. There is a chain of Prince hotels in Japan today.
The best chance of finding a match on Google would be to do a search in Japanese.
How is THAT done ?
I've yet to try Google Japan or China or . . ... I need to check in to that !