Speaking as someone in the US who was "into" computers in the 90's (albeit only in my early teens when the 1200 came out,) I don't recall very much advertising at all for Amiga systems. The last commercials I recall for Amiga were A500 era. Maybe I was just too busy playing Nintendo and fighting with Apple IIe's and 8088s, who knows.
You poor bastard,that must of scarred you for life..You are right,amiga commercials even in the 80's/90's were few and far between.Leave it to commodore to try and keep it a secret

I wouldn't of known what an amiga was if i hadn't had a friend who had a A1000,he had plenty of money and it was expanded well,he printed full color C= newgroup letters with fairly hi-res color graphics back in 87' time frame,we were all amazed. Seeing the newtek demo reel on a A500 in the PX was amazing.. had to get one for sure then.