The IBM 5150, aka the IBM Personal Computer, is credited with popularizing the term 'PC'. It was released in 1981 and sold in the hundreds of thousands despite the retail price, which was high at $1,565, or $4,360 in today's money. Though working models aren't in short supply, they fetch up to $1,000. See Article: https://history-computer.com/ibm-pc-5150/ http://oldcomputers.net/ibm5150.html IBM Personal Computer (PC) In perfect working Order Model: 5150 (First Successful IBM PC) Comes with Vintage IBM Monitor in perfect working Order Comes with original IBM Keyboard Comes with PC DOS Released: September 1981 Original 1981 Price: US $1,565 ~ $3,000 CPU: Intel 8088, 4.77MHz RAM: 16K, 640K max Display: IBM 5151001 Monitor Storage: dual 160KB 5.25-inch disk drives Ports: cassette & keyboard 5 internal expansion slots Has Ethernet card installed. OS: PC-DOS I have had this computer sitting in a box in a warm dry place for almost 30 years. Everything is original IBM. I dusted it off and loaded PC DOS into a floppy drive and it booted right away. Both floppy's read and write normally. The monitor is bright and sharp. I have run several applications and games and all works perfectly. i actually had a lot of fun brushing up on DOS commands. If you are a collector this is a rare find of a full working Original IBM computer & IBM monitor