I'm in the midst of buying an old Colnago super, can anyone tell me if Colnago ever used gipiemme dropouts on the super frame? Also "colnago" is not printed on the seatstays, should that be worrying? There are clovers cut out on the ht/tt, ht/dt and tt/seat tube lug's

here is a picture:

can anyone tell me if it is authentic, i don't really know too much about Colnago's