Hi, i have an old lever action shotgun that was passed down 2 generations. I dont know much about it. I know it is a Harrington & Richardson. It says Feb 20 & 27 1900, Pat May 14 1901. Harrington & Richardson Arms Co. Worchester Mass, USA. Pat Feb 20 &27 1900. The serial # is 585xx. It does not say a guage or anything on this rifle. This is all that is said on it. The serial number is behind the trigger guard, like under the stock. The res of the writing is on the left side of the gun. The barrel is not stamped with anything.
I tried to upload images but had no luck.