Could someone tell me if this is 78 or 33rpm player in this radio/record player?

Do you own this unit? If so, just turn it on. If the turntable rotates just a bit faster than one rotation per second, then it's a 78 rpm phonograph. If it rotates much slower, then it's a 33 rpm phonograph.

Judging by the age, it is most likely a 78 rpm phonograph.

T.