Early 2000's Conklin Crescent Ballpoint Pen. CK71124. Green/gold. The Crescent ballpoint is modeled after Roy Conklin's famous and patented crescent filler fountain pen which began production in 1898. It has been modernized into a ballpoint keeping all its elegant looks and comfort, and like the original, remains simple and easy to use. Mark Twain signature engraved in ring. New in box. Accepts Parker style refills. All our products are 100% authentic.