http://www.gunstocksinc.com/web_pages/Plate-pics/Ithaca-Stocks/Itaca-stocks.htm
Your serial number indicates that you have a Ithaca crass model double,that was made in 1903.
1906
built in 1908, 104 yrs old
Go to diamondgunsmithing on the internet and enter your serial number. That will do it.
There's a list of serial numbers by year at http://ithacagunrepair.com/page5/page23/
Made in 1901
It is an Ithaca model NID made in 1926
It is only worth what the person buys it for...
According to a table in "Ithaca Gun Company from the Beginning" it was made in 1901.
The gauge is stamped on the water table by the serial number. It is a Flues model made in 1924.
If the shotgun is a hammerless double, it is a Baker Model produced in 1899 (per Dixie Gun Works, Ithaca Serialization Guide) That serial should be a 1926 production NID. sales@countrygunsmith.net
Numrich Gun Parts Corp. online at ww.gunpartscorp.com