SONY ULH 550m 6 reels of pre-recorded open reel tape. Used in the late 1970s with a TEAC A1400. Mainly used for recording FM radio programs. The take-up reels include a mix of SCOTCH and TDK brands. While I haven't confirmed any mold, there are stains on the boxes. I don't have the equipment to check the recording and playback condition. I hope to find someone who understands that these are items that have been stored for a long time.