REVOLVER: H & R - HARRINGTON & RICHARDSON MODEL 900, SERIAL NUMBER AD81755, BLACK (MATTE), CASE NOT INCLUDED, 6" BARREL, 22 LONG RIFLE (22LR), DOUBLE ACTION Notes: HAVE YOU BEEN LOOKING TO RESTORE A H&R - HARRINGTON & RICHARDSON MODEL 900? WELL, THIS MAY BE THE RIGHT PROJECT GUN FOR YOU. SERIAL NUMBER AD81755. THE BLACK (MATTE) FINISH HAS SPOTS OF RUST & PHYSICAL WEAR. THE 6" BARREL IS STILL IN GOOD SHAPE. SO, IF YOU'VE BEEN LOOKING FOR A 22LR DOUBLE ACTION PISTOL TO BREATH NEW LIFE INTO, THEN THIS IS THE GUN FOR YOU.