hello my father has a gun that reads colt d.a. 41 on the barrel and has 148 and 197 on the bottom of the handle and 785 on the cylinder release. we are not sure if this gun is as a old as it proclaims because it was not bought by a dealer, but it also has inscriptions on the inside of the handle that reads "Bob f." "Killed 4" "w.y" "Sorry mom" "1897" and has 4 notches. We are not really savvy in guns and were wondering if anybody had a clue as to what all that means and whether this gun could really be that old. Thank you