Genuine Nakamichi high quality and durable metal alloy ZX C-90 cassette tape, excellent condition, recorded only a few times in the past. Made in Japan. Only 5 available Now only $50 each. TDK SAX-C90 Chromium oxide type 2 cassette tape. recorded only a few times and some just one time in the past. In excellent condition. Only 10 available. Now only $15 each.