WH Smith Ferrocassette C90 compact cassette

...that is if the inlay is to be believed.

 

A computer version of what hipsters call a "mix tape", this is a ZX Spectrum games compilation tape, lovingly crafted by Adrian Darwin and featuring a colour-pencil rendition of the Sinclair Spectrum colour-slash.

 

I borrowed this in the mid-80's and I expect he wants it back.

Done