Not sure but I have #9972
No known sn data published.
Check the barrel and receiver
look on the breach, barrel.
Try the receiver, barrel, forend
Check the receiver and barrel
With the serial number that you provided,your Ithaca double barrel shotgun with the damascus barrels was produced in the year 1900.
Please include the model number of your Winchester shotgun to get a correct answer to your question along with the serial number.
You may have to break the shotgun down in to the barrel section and the receiver section first.Look under the barrel section on the flat just ahead of the lug for the serial number.
next to the barrel
Try loooking on the reciever, tang and barrel
27p
Look on the receiver and barrel.