VTG Audiotape Formula 10 Reel-to-Reel Tape 1200 ft Original‎ Box Audio Devices

This listing is for a vintage Audiotape Formula 10 reel-to-reel magnetic recording tape, produced by Audio Devices, Inc. (Glenbrook, Connecticut). Formula 10 was designed as an all-purpose professional recording tape, widely used in studios, radio, and home recording during the 1950s–1960s. This example includes the original C-slot reel, original box, and printed instructions. Item Details: Brand: Audiotape Manufacturer: Audio Devices, Inc. Model: Formula 10 – All Purpose Format: Reel-to-reel magnetic tape Length: 1200 ft Tape thickness: 1½ mil acetate Reel type: C-Slot Original box & inserts included Handwritten recording notes on box (see photos) Era: Mid-20th century (1950s–1960s) Condition: Vintage / pre-owned Box shows age wear, edge wear, and light discoloration Tape present on reel, untested due to age Because of the age of vintage magnetic tape, this item is sold primarily as a collector or archival piece.