Vintage 3M Scotch Pro-Pak magnetic tape reel, model 177-1, 4-1800. This is a reel-to-reel magnetic tape from the 177 series identified by the 177-1 and 4-1800 designations. It represents a historical piece of 3M magnetic tape media from the Scotch Pro-Pak lineup, intended for use in reel-to-reel tape systems.
