I have an older bianchi. Made in Italy with mondolo mach 1 1 brakes, campagnolo shifters, strong light cranks and derailleurs, wheels described as elite 19 duralex marchio depositato allumag monocellular. Only numbers are 7.8 14 on one side and 4586 other side.

im trying to determine age as I’m guessing I purchased it in late 70’s

im thinking it is a formula 2

ramjet

You'll find Bianchi catalogs stickied at the top of Classic & Vintage page, it should help you identify the age. As a newbie, you can upload photos to an album on your personal page and someone can post them for you until you get 10 posts. I'm sure one of the Bianchi experts will come along and assist you in due time.