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

On 01/10/2017 04:09 PM, Andy Cloud wrote: I don't know if it qualifies as computer-related or not, but I do have a Burroughs adding machine from January of 1905 - it's a little unusual because although it's a non-motorized machine, it has a very early variant of the stand/side-table (where the majority of the manual machines were intended for desktop use) I was mainly into micros (due to lack of space back in the day), so there's nothing really exciting in the electronic side of things, although: Likely < 20 survivors: Acorn System 1 (2-board 6502 machine ~1979) Acorn System 5 (backplane-based variant of above with various extra boards) Acorn Cambridge Workstation (6502/32016 dual CPU machine) Acorn/BBC Domesday system Torch Quad-X (VME-based m68k Unix machine) Research Machines 480Z (one of the first few made, with the metal case) And slightly more common items: Amiga 1000 (a few about, but far more likely to see an A500, 1200 etc.) Vectrex Osborne 1a Commodore +4 (a working one, I'm sure there are more dead ones around!) SGI Indigo2 (fully-loaded) SGI Origin 2200 Compaq Portable (a II and a '286) Research Machines 380Z I've possibly got the only surviving Cumana 68008 co-processor for a BBC micro, and also the only surviving Acorn 80286 co-processor for the same, but that probably only means something to folks who collect Acorn hardware :-) Oh, and for slightly unusual I do have an Apple II+ which was built in week 51 of 1982, which is a couple of weeks after the line was discontinued by Apple. It's a shame that nobody goes nuts for high serial numbers. cheers Jules