A set of 5 unopened open reel tapes: TDK LB-555 (audua) and maxell UD 35-90. Both are known for their sound quality. To prepare for listing, I opened one of each tape and tested them by fast-forwarding and recording/playback to ensure there were no issues. I specifically tested the tapes with back-coating, considering potential aging of the magnetic material, and also for a sound quality check. Even though they are unopened, they are almost 40 years old. Of course, the 5 tapes being sold are unopened. * The two tapes I tested are for my personal use. * The testing was done on my AKAI "GX-747". Due to compatibility issues with the buyer's deck, please understand that this is a no-claims, no-returns sale. - Brand: TDK - Model: LB-555 2 tapes - Brand: maxell - Model: UD 35-90 3 tapes Thank you for looking. I have a lot of open reel tapes, but considering my age, I want to reduce my collection. I am testing them and listing them gradually to avoid causing any inconvenience to buyers. Thank you for your understanding.