.Rear is a Shimano 600EX (SIS) which dates it too around 1986-7 (says Velobase).As above look for any identification marks. Looks like a quality machine. What derailleur is it? That can help date it.
Btw welcome to the forum.
I think you could be right ...Super Vitus 971 early 1980's . Rear brake cable brazed guides suggest '80's l think seventies were clip on guides . Finish is way to fancy in my opinion so l'm sure it has been re sprayed but so what? Nice bikeWhat flavour Vitus? Looks like a red label, which could be SuperVitus 971 - if so, lighter than Reynolds 531. 181 is also good, as is earlier 172. Either way, I’d expect to see Vitus forged dropouts, too.
