TDK MA-X 90 (4 pieces) and Sony Metal-XR 90 (1 piece). Sealed vintage Type IV metal cassette tapes produced in Japan in the late 1980s to early 1990s. This lot includes four TDK MA-X 90 tapes and one Sony Metal-XR 90 tape. Both models are high-grade metal position (Type IV) tapes, well known among audiophiles and collectors. All tapes are factory sealed and unused. They have been stored in a humidity-controlled environment. Condition Due to long-term storage, one or more packages may have a small hole in the outer wrapping. Minor surface scratches or storage wear may be present on the packaging. Please carefully check the photos for details. The tapes remain sealed and unused. As they are unopened, functionality has not been tested.