The Vintage Radio Shack TRS-80 Model III TRSDOS Backup floppy disc is a rare and sought-after item for collectors of vintage computing technology. This 5.25" disk, made in the United States by RadioShack, is specifically designed for use with the TRS-80 Model III computer. With a clean and unmodified design, this backup floppy disc is a valuable addition to any vintage computing enthusiast's collection.