Whatever it is I'm aware the Benotto cello tape was popular around 1982:
https://lecycleur.com/style/the-righ...ntage-bicycle/

Does the white Benotto tape shimmer a bit ?

I did look for Benotto tape and couldn't find siver as a colour, they did do light gray and white though.
https://www.retrobike.co.uk/threads/...r-tape.405880/

Even if it's not what was on there I'm guessing the white Benotto would look fine (bike is red with white cables).

Oooh, well spotted it could be Schwinn tape.