This listing is for a vintage Tandy 3.5-inch floppy disk containing MS-DOS®/GW™-BASIC and Supplemental Programs. The disk is labeled with Catalog No. 25-1601 and Version 03.30.20. It appears to be a High Density (HD) disk, commonly 1.44MB, based on the physical characteristics (two holes on the bottom edge). This is a great collector's item for enthusiasts of vintage computing, Tandy systems, or early Microsoft DOS software. Ideal for restoration projects or display.