I need the answer
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.
The value of an old double barrel shotgun Damascus Bonehill Special BB London would actually be dependent upon a number of factors. Some of these factors would include the age exactly and the condition of the shotgun.
Have it examined by a competent gunsmith
I just bought a H.S. Brown Damascus double barrel in 10ga. Dated 1883 in very good condition for $400.
It is a 10 gauge if it has a damascus barrel and it in mint condition can be worth up to 2000 bucks