I believe the ink is dried up on this refill. You will need to most likely replace it. Or play around with it for a while. I’m not positive. The Sheaffer's “Comserv” Flat Top Black Screw Top Ball Point Pen is a vintage fountain pen made of durable plastic with chrome trim. It features a screw-top design and personalized elements, making it a unique and sought-after collectible item. Sourced from the United States, this pen exudes quality craftsmanship and timeless style, perfect for any pen enthusiast or collector looking to add a classic piece to their collection.
eBay