SH3353  Sheaffer Reminder Clip Ballpoint Pen, ca. 1960s, ivory barrel with NASCAR Winston Cup Grand National Drivers logo in red with black and white checkerboard flag, smooth finish chrome cap with the sleek curved reminder clip to extend and retract current production Sheaffer BP refill. Sheaffer is not engraved anywhere on this pen which is unusual and leads me to think perhaps this was an early example of the curved reminder clip. Measures 5 5/16 inches long. Excellent condition. (1 avail)