Tail lights

There are several markings on the center numbers P22088 and E3, 31981. Top reads ALTO IGM 4017 IP. Bottom reads IGM 4016 LPX made in Italy.
Hi George - have a search for "stop tail lamp bulb holder" and look for ones with lugs which will fit your reflectors. You may have to get a little creative, but something like this ought to fit:-