What's the rarest or most unusual computer-related item do you own?

My most obscure (though far from rare, as no one has ever heard of them) is a Gnat System 10: (a picture at) https://archive.org/details/bitsavers_gnatComputhure1979_7760927 Z-80 (4MHz if I recall on mine) with SCSI (Perhaps SASI at the time) interface, lots of parallel and serial connectors on back. An early all-in-one sold by a computer making pretty decent process control z-80 machines. We connected to a load of them back in the late 70s on some automation projects. Their "rack mount" computers were pretty damn solid and my System 10 still runs. It's a CP/M machine and I used it as my main 'terminal' to BBSs and such for quite a while. Also have an IMSAI, a Sol-20 (rescued from dumpster.) Oldest tech is probably a "Typotron Display" crt from Sage computer system (a 4 inch storage tube about 3.5 feet long with for displaying textual context.) Removed by me from a Sage console in about 1972 or so. Wish I had kept the whole console :-( but it weighed about 800 pounds (guestimation from difficulty in loading and unloading -Gary On 01/10/2017 02:09 PM, Andy Cloud wrote: