You have a Ithaca Flues model made in 1922 Can not provide additional info without knowing condition and grade of shotgun. 200.00 - 4000.00
Your serial number indicates that your Ithaca shotgun was made in the year 1920.
No way to answer.
By the serial #
It sounds as if you have a Ithaca Crass model shotgun,that was produced in the year 1903 by your serial number.
With the serial number that you provided,your Ithaca double barrel shotgun with the damascus barrels was produced in the year 1900.
That is a phone number, not a serial number. Ithaca did not make 3 billion shotguns.
I would need to know the model of the shotgun in question,along with the serial number to give you the correct answer to your question.
Its an Ithaca Flues model made in 1921