VERY RARE AND COLLECTIBLE PARKER DORIC BALLPOINT PEN. ONE OF THE FIRST TWIST OUT BALLPOINT PENS. MADE FOR ONLY A SHORT PERIOD OF TIME THIS IS THE FIRST ONE WE HAVE HAD IN 40 YEARS OF HAVING A FULL TIME PEN STORE. ORIGINAL REFILL IS PRESENT IN PEN. YOU SHOULD BE ABLE TOP USE LONG GENERIC REFILLS THAT ARE AVAILABLE AT OFFICE MAX/DEPOT TRIMMED TO CORRECT LENGTH. EXCELLENT CONDITION.