Rare Quasar Royal Bank Client Card Solar Electronic Calculator

Rare Quasar Solar Cell Electronic Calculator credit card size.
This looks like a Royal Bank Client Card on the back (Fictitious name and number).
Probably issued by the Royal Bank as an advertising item to attract new clients.
It comes in a soft brown suede envelope, inside of a glossy silver cardboard holder inside of a cardboard sleeve.
The calculator works fine and comes with a complete set of instructions.
Believed to be at least 25 – 30 years old. Like new condition.