Challenger 8P with Dual 8" Floppy Disk Drive. Computer ID plate reads "C8P DF Serial # 11916, Boards installed include 505-B CPU, (3) Mem cards labeled 0000, 0004 and 0008. Also has label "Custom Debug" on or adjacent to other circuitry. Disk Drive ID plate reads CD (or CO?) 2P. I cannot read the serial number. This computer was removed from business service while still in operating condition 20 years ago, and has been stored dry since then. It makes what appears to be appropriate sounds when plugged in and booted, as does the disk drive, however, I have neither the keyboard nor a monitor that will connect properly to verify what appears on the screen. I also have a number of floppies - some data, some operating system, which I will be listing separately on auction.