These are brand new I opened them to see what they were from an estate sale

The Compatible Canon EXV29/GPR-31 Toner Cartridge 4 Pack in Black, Yellow, Cyan, and Magenta is a high-quality product offered by The Cartridge People. This unit is specifically designed for Canon printers, providing vibrant color options for your printing needs. With a manufacturer warranty of 90 days, you can trust in the reliability and longevity of this product. Made in the United States, this toner cartridge pack is compatible with the Canon GPR-48 model and offers a convenient solution for your printing requirements.

Compatible toner cartridges for the Canon EXV29/GPR-31 (1B3C) series, specifically for imageRUNNER Advance C5030/C5035/C5235/C5240 models