Released in 1976 TDK D-C60 dynamic cassette LOW NOISE Normal position, set of 2. This first-generation D was sold in the following versions: Early: 1972 Mid-I: 1974 Mid-II: 1976 Late: 1979 This tape is the Mid-II type. This is a rare item, as unopened shrink-wrapped versions are rarely seen. How about adding it to your collection? As this item is an antique that has been around for nearly 50 years since its release, there may be tape degradation due to aging. *Since it is unopened, the operation has not been confirmed. Please refrain from purchasing if you are concerned about minor details or are overly sensitive. Thank you for your understanding.