Check out ebay item: Vintage TI 58 C Calculator Computer 58c TEXAS Item #525565571 http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=525565571
LOL! Looks like I'm popular with eBay sellers. I just wish there were more like this chap, publishing a proper link, and fewer of those who just steal images!
Viktor