Hi I sell vintage slide rules which are considered, I suppose vintage calculators. Also, I sell vintage calculators such as texas instruments calculators. Any suggestions for a new category or where I could put these to sell. Keep in mind that I did a buy it now check on these, and could not find any TI's under Texas Instrument, just Texas Instruments. I should be able to pick up info on these calculators without the "S" at the end. Also, these are collectible TI's not the new ones. I did not find Sliderules listed on ebid. I currently sell on eBay and am switching over to this site, slowly.