Possible Vintage quinto? "Norberto" signature ID?

Found on local ebay, $50.00
PRELOVED HANDMADE CONGA OF HARDWOOD , 4 TIGHTENING BARS , AND 3 METAL COOPERING RINGS TOP, MID AND BOTTOM, SEEN MANY PARTYS AND HAS PLENTY OF CHARACTER , STILL MAKES GOOD SOUND , HAS "NORBERTO" SIGNED AROUND THE BASE , WIFE SICK OF TRIPPING OVER IT , NO WAY I'M POSTING IT, SO PICKUP ONLY IF YOU NEED MORE INFO CONTACT ME.
Drum is located approx 20 min from a student of mine. Tinking of snapping it up, the fact it has only 4 lugs is making me think it cant be all that....
Any thoughts on its possible origins? Looks old... No other pics either, the head looks bigger than 11" though, maybe its the angle of the pic?