Hartford Arms Company: Trade name used by the H. & D. Folsom Arms on shotguns made for the Simmons Hardware Company of St. Louis, Missouri. Unlikely that it was ever on a stagecoach. Laminiated steel barrels were not designed for modern ammunition, so even if it does work, don't use it.
What is the value of a Beebe arms double barrel shotgun?
I have a similar question, but for a 12 gauge with a serial number of 135380. My question is for a shotgun belonging to my gg granfather, who was a merchant. I would guess the gun's age between 1880 and 1910. The Hartford Arms Company may be the Hartford Fire Arms co. as the 'Arms' version sold to Simmons, a supplier of merchants. This suggests many guns were produced for general commerce, not the fine arms trade. Obviously, the Simmons information may have came from a source you already have. None of this helps with the value question we both have, but may be of interest to you.
The value of the gun depends a lot on the condition. A Columbia Arms Shotgun ejector model could be anywhere from $100 to $1,800.
The value of a Continental Arms company 20 gauge shotgun is dependent upon a number of factors. The age and condition of the shotgun would need to be considered when determining the value.
contact Rick Cutter @ maricopafirearms.com
70-100 yrs give or take
Value will seldom exceed 150 or so