Made in 1913. Depending on the condition and the gauge, it might bring anywhere from $300 - $700, with the 20 Ga guns worth more than the 12 Ga guns; and obviously - one in very good condition (no rust, all original, locks up tight, blueing still on the barrels, pretty wood, original butt plate, etc.) bringing the highest amount. You might like to watch www.gunbroker.com to see if someone advertises one similar to yours.
There's a list of serial numbers by year at http://ithacagunrepair.com/page5/page23/
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.
(1949) - 202951 thru 302500
You have an Ithaca Flues model made in 1917 if it is a sxs double not stated in your ques
You have an Ithaca Flues model made in 1917 if it is a sxs double not stated in your ques
You have an Ithaca Flues model made in 1917 if it is a sxs double not stated in your ques
You have an Ithaca Flues model made in 1920 if it is a sxs doubel not stated in your ques.
You have an Ithaca Flues model made in 1917 if it is a sxs double not stated in your ques.
By your description,it sounds as if you have a Ithaca model Flues double barrel shotgun that with that serial number was produced in the year 1914.
Its an Ithaca Flues model made in 1921
See www.diamondgunsmithing.com. That serial number falls in the range of a Flues single & Double barrel category, year 1924.
Its an Ithaca Flues model made in 1921