Scotch Scotch 3M Recording Tape 150

Found in my grandfathers stuff affter he passed i have no idea what's on it. This vintage Scotch 3M recording tape is designed for 'Living Letters' with a 1 mil polyester film on a 3-inch reel. It offers 225 feet of recording length at 3 3/4 ips speed, suitable for recording in both directions. The tape is in good condition with some signs of age and wear on the packaging, including handwritten labeling and original postage stamps from US Air Mail. A great collectible for tape enthusiasts or those interested in vintage recording media. 62326-495-5