Colt Ace Service Model, .22 long rifle cal. auto pistol. Serial #70B52871.  An excellent condition Series 70. Blue is 97% with some very faint surface scratches. 5” barrel with an excellent bore.  Rear adjustable target sight with a high front blade. Colt gold monogrammed  rubber grips are excellent.  Action is smooth and nice.  Stainless spur hammer. A great one to put away or take to the range! HARD TO FIND ITEM.