Up for sale is a used HP 48GX expandable graphic calculator, serial #3431S07180, which comes with a softcase, user guides, and the original box & interior plastic forms.  The calculator is in very good working condition and has a screen that appears quite clean to me with no dead pixels.  The previous owner wrote his name on the back in sharpie, but otherwise the calculator is in good cosmetic shape.  The box is quite beat up with heavy edge and corner wear, particularly to the top flaps, along with some staining.  The case is somewhat smushed from being sandwiched inside the box between the plastic forms and guides, and it also has some scattered stains.  The guides are in cleaner shape and I did not see any writing/highlighting inside.  Please be sure to fully enlarge the provided photos, and feel free to contact me with any questions you may have.