This is a genuine HP 11 ink cartridge in its original foil packaging. These cartridges were originally slated to be packaged with new printers. The part number on the pacakge is C4838G and it is comparable with the C4838A retail packed cartridge. The install by date on the cartridge is 2010.
HP Business Inkjet: 1000, 1200, 2200, 2230, 2250, 2280, 2600, 2800
HP Color Inkjet: cp1700
HP Designjet: 70
HP Officejet Pro: K850