I have a marlin 1893 30-30 with a take-down 20"barrel, stock & metal are in Good+ condition. It's been sitting in my house for 50+ years & I never have fired a shot out of it. S/N is 2688XX. I am interested in finding out the current value of this gun. I live in a small town in the mountains of NC & the 2 gun shops in the area haven',t a clue. Can you help?