The ink cartridges were in storage, while possibly older they are in perfect working condition. Please reach out if you have any questions.The Genuine Riso S539 Black Duplicator Ink Box of 2 is specifically designed for use with Riso printers, including models GR1700, GR1750, GR2750, S-3878, and more. This original ink cartridge in black color is compatible with various Riso printer models, ensuring high-quality printing results. With this genuine Riso ink, users can expect precise and accurate duplications for their printing needs. Perfect for professionals and individuals looking to maintain consistent and professional results with their Riso printers.