When I was about 14 or so my dad gave me his Crescent arms American Gun co. Knickerbocker double barrel 20 guage. His uncle was going blind and gave it to him around 1920. He was 9 years old at the time. I still have it and it's in great shape. It's one of the first hammerless models they made. Full choke on the right barrel and modified on the left. Best grouse gun I ever had.