Manufactured in 1899. Value depends on condition. Probably has Damascus twist barrels, so wouldn't shoot modern loads. If in good condition, value would probably be $350-$500. Watch www.gunbroker.com for comparable guns and see what they bring.
If it is in excellent condition it might bring $1200 - $1500
1951 Model 37
If that is an old double barrel "New Ithaca Double" it was made in 1926.
Your gun barrel dates to 1919 if it is a sxs double not stated in your ques.
With the serial number that you provided,your Ithaca double barrel shotgun with the damascus barrels was produced in the year 1900.
Its an Ithaca Flues model made in 1921
With the serial number that you have supplied,it sounds as if you have a N.I.D.model Ithaca double barrel shotgun made in either 1928,or 1929.The Initials N.I.D.stand for the words New Ithaca double While you have not provided a detailed description of the shotguns overall condition,including the amount of original finish remaining.I can say that the price range is between 315-825 dollars,depending on the gauge and grade of the shotgun in question.If you choose to repost your question with the grade and correct gauge of your shotgun along with the choice of triggers supplied,and if the barrels are plain or vent rib,I could more define the value for you.
Its an Ithaca Flues model made in 1921
1896
It sounds as if you have a Ithaca Crass model shotgun,that was produced in the year 1903 by your serial number.
The exact value of a 1909 Ithaca double barrel shotgun stagecoach model would actually be dependent upon a number of factors. The most important factor that would be considered is the condition of the shotgun.
It sounds to me that you have a Ithaca Flues model double barrel shotgun.With the serial number that you provided,your shotgun was made by Ithaca in 1917.