Ufo over an Italian city in the '60

This event took place in the first half of the '60. I was a kid, it deeply scared me causing me severe sleeping problems. I reported it to my parents ONLY.
It was a sunny summer day in the Italian town where I was rised, and I was playng ball in my grandparents garden, when I saw whith the corner of my eyes somthing big flyng. I raised my eyes and I got stunned : a discus shaped object was flyng with no audible sounds or lights. Attached under it had 3 tanks-alike things, and the top was shaped as a tower with round things like windows or lights ( NOT lighting ). The object flyed slowly, not shaking and had a path. It disappeared behind a nerby house.
 I immeditly reconnised the object as an extraterrestial flyng sourcer as the Italian press called them: At that time the word UFO was NOT in use. They was called invaders and abducers, so I was terryfied since I tought they saw me.
I know the object was seen by other in town and photographed in the local paper, with no description. I never more saw anything like that or other UFO's.
Witness indicates that the date of the incident is approximate.  PD