Here's some of my stuff.
Intel 486 DX, not quite an early enough one to just say i486, but I have one of those packed away in the closet.
http://goput.it/t4n.jpg
A totally awesome software collection. Someone copied that floppy.
http://goput.it/yku.jpg
IBM Proprinter 4201. I'm currently working at making it work full time, hence it's not entirely in it's complete plastic clothing.
http://goput.it/ong.jpg
Some random expansion cards I Had laying around. From top left to right, then down left to right; ISA floppy controller with ROM (1.44 Mb in XT anyone?), Sound Blaster Pro 2, random VGA card, Sound Blaster 32, Adaptec SCSI controller, stock 5150 floppy controller.
http://goput.it/te4.jpg
Some iMac G3s...just sitting there chillin, two of them in incomplete form but as far as I know they don't care.
http://goput.it/5wm.jpg
TRS-80 Model 100 with original sleeve and a plastic protector thing. For this one I do have the original box (price new was $599), A\C cord, most connector cables and the optional blue carrying bag.
http://goput.it/enl.jpg
Some old monitors. From left to right: IBM 5151 (IBM MDA screen, original for the PC), IBM 5153 (CGA monitor), Samsung CGA monitor.
http://goput.it/czv.jpg
Compaq Portable I, the only old system I own that I can say I will never part with. This one has the historical significance of being the first true IBM clone that's pretty much 100% compatible, and is portable. Probably the only one I own that's on many people's wish list but yet few are still around.
http://goput.it/60z.jpg
IBM 5150, Black PSU, 64-KB ram. This here is almost stock except the processor is a V20 in this right now, but I have an 8088 I can throw into it if I ever feel like it.
http://goput.it/txe.jpg
The front of the 5150. The thing on top is a dust cover for the floppies.
http://goput.it/f5j.jpg
And finally, a really bad picture of the front of my 286 upgraded XT.
http://goput.it/sf9.jpg
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Just a heads up, that's an AT keyboard port. The IBM PS/1 was released after the PS/2 as a budget solution, and used PS/2 ports.