If it is an Italian repo, it will have proof marks all over it. A real Colt has none. The real Colts have serial numbers on the bottom of the barrel lug, frame, on the trigger guard, on the bottom of the back strap and on the cylinder. On the right side of the frame toward the front are the words COLTS PATENT in two lines. The top flat of the barrel is marked in one line -ADDRESS SAML COLT NEW YORK USA-. If it has the Sam Colt scrawl on the back strap, save your money or donate it to your favorite charity. Anything is better than owning one of these junkers. But if it is an
"F" or "C" series gun you will probably never find another at this price.