Here we have two SK-900 Pencil Box Calculators still on their card and the calculators still work. From around the late 90s so they are starting to get old. These were made in China. Found these at a flea market and only paid $2.00 each for them. I was watching one on eBay that was not on the card and they wanted a whole lot more then $2.00 for it. Keep your eyes open at flea markets and add one to your collection.