DENON Normal Position Zippy-1 RD-R46, 46-minute (23 minutes per side) cassette tapes, a set of 3 packs with 4 tapes each. These are new, unopened, and include index cards featuring Yuri Kunizane, who was the CM character in 1988. Some minor deterioration of the vinyl due to aging is visible, but the condition is generally good. Since they are unopened, the operation has not been confirmed. While I believe they should work without problems, please be aware that these items are over 30 years old, and I cannot be held responsible for the condition of the contents. Thank you for your understanding.