Various manufacturers: SONY, TDK, maxell, Victor, Konica This is a set of 12. Please refer to the photos for the contents. Although unopened and unused, please consider that these are vintage items that have been in storage for over 30 years, so there may be some age-related deterioration. *Since they are 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 and cooperation. ↓↓↓Please be sure to check↓↓↓ ■■■Important Notes■■■ Please take the time to read my profile. *Please ask any questions before purchasing. *Please refrain from comments unrelated to the product. *Everything in the images is included. *If there are any scratches or stains, I have included images, but there may be oversights. *Alcohol disinfection and simple cleaning have been done. *This is a product that has been in someone's possession once. If you are extremely concerned about the condition or smell, or if you are a perfectionist, please refrain from purchasing. *Basically, "simple packaging" will be used. If you are concerned about the packaging, please refrain from purchasing. *I take care with packaging fragile items and machinery, but there may be damage during transportation. In the event of a shipping accident, the buyer will need to file a claim with Mercari. Please be aware of this beforehand. *I am not a specialist, so I will respond to inquiries to the best of my ability. ⭐︎I will delete any inappropriate comments or unreasonable price negotiations. I will not offer significant discounts. ⭐︎I will reuse cardboard boxes for shipping, so please understand. ⭐︎If you are unable to communicate properly after purchase, I may cancel the order and report you to Mercari. Example: Payment is made at a convenience store after purchase. No response to purchase messages for several days, and no response even when the payment deadline arrives. Basically, everything in the photos will be shipped. ⚠️ Please purchase only if you agree to no claims and no returns to prevent product substitution.