If your Winchester model 1897 shotgun has between 10%-60% of its original finish remaining,then it will be worth between 150-300 dollars.
Your winchester model 1897 shotgun was made by winchester in 1900.
Your winchester model 1897 pump shotgun was made early on in 1900.
Marlin made the model 1898 shotgun,while Winchester made the Model 1897 shotgun,A Winchester model 1897 shotgun with the serial number provided indicates that it was made in 1900.The Marlin model 1898 shotgun was made from 1898-1905.
Winchester model 1897 12 gaugeThe 1897 Winchester model 12 gauge pump was manufactured 1897-1957. The standard barrel length could be ordered from 20"-36". The value depends on condition,The year it was manufactured, and also historic value. If it have any markings such as police use, military use, or any other historic use the value would be much higher, for example the U.S. Winchester Model 1897 slide action trench gun $2,800-and up. Without examining your shotgun, if it is in decent condition, working order, no special historic value it should sell for between $500-$700
The year of manufacture for serial number 86486 is 1900 Source: http://armscollectors.com/sn/windates.htm
12 gauge winchester 1900 made in 1899.In order to assist you in defining a value to your Winchester shotgun I will need to clarify some info provided and ask that you give a more detailed description of the shotgun in question.First I will say that Winchester made the model 1897 pump action shotgun,they made a model 1901 lever action shotgun in 10 gauge only.They also made the model 1911 semi-auto shotgun.So you must determine the model of your shotgun first.Then provide more info on the overall condition of the shotgun to include the amount of original finish remaining on the wood and metal,type of barrel(plain,vent rib,solid matte rib).All these things will help me assign a more accurate value to your shotgun.
If it was made by Russell Arms Co.Then it is not a Winchester shotgun.
According to OldGuns.net, the year of manufacture for serial number 76526 is 1900.
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Take the C out and the search says gun # 66208 was made in 1900.
there is none