Here is a Colt Model 1878 made in 1893. It has 5 knotches on the bridge when why friend got it. Who put them there and why they are there I don't know and my friend doesn't either. It is a Double Action pistol. Colt also did what they could on researching the pistol. I hope you all can read the letter that I posted. If not I will do my best to take another pic of it. Please feel free to ask for any other pic's that you might want to see and PM me if you have any questions about the gun. He is now asking $1000.00 for the pistol. Please also feel free to make offers.