For starters, reselling your Mac is the best way to get the most value out of your old computer. For a simpler, but less valuable, way to get something back for your old Mac, check out trade-in ...
The signed floppy disk has an estimated value of $7,500 according to the listing. The floppy disk contains the Macintosh System Tools Version 6.0 software. The post notes that the floppy disk is ...