hi there what do you mean by idrk/idk? thanks
IDK = i dont know
IDRK - i dont really know
are my guesses.
Back to frame.
You say there are a number of card features. as someone says, Derosa had hearts. Well colnago has clubs. I guess the framebuilder played on these style touches.
Lugs and over bottom bracket cable guides suggest pre 1980's. After this, under bracket tunnels and short dropouts became common. Initially, I thought cycloX frame, but in that age, they had single chainwheels, so no front mech guide would be fitted. Plus there are mudguard eyes, so I would say it was a tourer. Italian bikes tended to be racers, not tourers.
If I were guessing, I'd say it was a club bike/tourer from a bespoke framebuilder, evidenced by quality lugwork and probably British cos at that time, we were the best at it.
But its all guesswork.
A bicycle can't stand up on its own as it's two tyred