Sold in 1985. This is one TDK SA-X 90, a high-bias cassette tape. It is an unopened, unused item, but please consider that it is a vintage item that has been in storage for over 30 years, so there may be age-related deterioration. *Since it is unopened, the operation has not been confirmed. Please refrain from purchasing if you are sensitive to details or are concerned about the condition. Thank you for your understanding. #cassettetape #unused #unopened #recordingmedia