Cassette tape. Vintage, old audio recording format. Audio cassette with hand written top ten December 1976, recorded music from radio. Scotch C90 Stock Photo - Alamy
100 TDK "D90" C90 Audio Cassette Tapes Normal Bias, Used sold as Blanks | eBay
Hitachi EX - 1981 - US - Blank Cassette - New & Sealed