Sheaffer Classic Fountain Pen Ink Cartridges Blue Black 5 Pack 96310 New Sealed

This listing is for an original, factory-sealed blister pack containing 5 genuine Sheaffer Classic Fountain Pen Ink Cartridges in the iconic Blue/Black color. Packaged under model number 96310 by the A.T. Cross Company, these proprietary, classic-format cartridges are manufactured in Slovenia to exact specifications.  Historically, Sheaffer's proprietary cartridges evolved directly out of their famous Skrip ink legacy, which was developed mid-century to offer writers a highly fluid, non-corrosive, and smooth writing experience. Designed with a distinctively thick, robust plastic wall, the classic cartridge format features a hollow end that punctures smoothly upon insertion into the pen barrel. This formula delivers a classic, deep, shaded blue-black line that is a traditional favorite for daily journaling, correspondence, and archival office tasks. These proprietary cartridges are explicitly designed to fit both vintage and modern Sheaffer fountain pens and calligraphy sets. Please note that they are strictly not compatible with the Sheaffer VFM line (which utilizes standard international short cartridges) or pens from other manufacturers. The card backing is structurally sound with minimal retail edge wear. Please review the images to verify exact packaging details prior to purchasing.