Keystone firearms were made by the Davenport Firearms Co. in the late 1800's. They were, I believe, inexpensive guns made to be sold either by mail order or through your local hardware store. Unless it is in very very good condition it value would probably not be more than $150 or so, and then only to be used as a wall hanger. One should be very careful about firing any damascus barreled gun, this is especially so with inexpensive firearms from that era.
With the serial number that you provided,your Ithaca double barrel shotgun with the damascus barrels was produced in the year 1900.
A Damascus twist steel double barrel shotgun is an antique shotgun made by layering iron and steel and welding them together. This kind of shotgun is worth approximately $3,000 depending on the condition of the weapon.
around $6000
Under $200.
10-100 usd
about $3500
$317
50-100 USD
It is a 10 gauge if it has a damascus barrel and it in mint condition can be worth up to 2000 bucks
The value of a London Fine Damascus 14 gauge double barrel shotgun marked JT Sang Ford depend on its condition. This gun in excellent condition is valued between 225.00 and 320.00 as of 2014.
No. What would the company that produced the finest American double barrel shotgun want with a utilitarian import?
I posted a link in the related links section that may be of some help.