You have three choices: 1. Sell it to a dealer. You'll get the wholesale value---call it 50-60% of retail. 2. Consign it to an auction. You'll get 80-85% of hammer price. 3. Sell it "at retail"---via a listing in the For Sale section of this forum (by whatever more proper name it might be known), or via an online auction/other listing facility. I'm quite certain an online auction/other listing facility (e.g. Gun Broker) charges a fee, and I'm equally certain it will be substantially less than that of a brick & mortar auction house; but I have no idea what it is.
As an aside, there are other price/value guides (other than Antique Road Show) with which I would be more comfortable. The Standard Catalog of Smith & Wesson comes to mind. It lists values for virtually every S&W ever made----and in virtually any condition from brand new to boat anchor. The only drawback is it's six-seven years out of date, so the values shown therein require the application of an appropriate fudge factor; which you and your buyer can come to agree upon.
Ralph Tremaine
In the likely event you don't have the "Standard Catalog" close at hand, here's a severely condensed version of what it has to say about your gun. The six-seven year out of date value ranges from $20,000 (for "Excellent +"----which is very spiffy) to $1,250 (for "Poor"-----which is boat anchor). A cut barrel (You have one.) reduces the value by half. End of severely condensed version.
Zeroing in on a realistic and appropriate value is going to require a detailed description of the condition by an expert, or the posting of some high quality photographs which will enable our experts (some of whom are potential customers of yours) to make up their own minds about it.
Here's some more stuff you may find enlightening. It's a list of guns sold. The % figures cited refer to the percentage of original finish remaining. The year/date, when shown, refers to when it happened. 92%, $39,725, 2006. 93%, $27,600, 2005.Then there's this little tid-bit worth noting: "To illustrate the importance of condition to Schofield values, note that the following lesser condition Schofields sold on the same day at the same auction as the previous one." 70%, $8,050. San Francisco Police marked model, 40%, $7,188. Cut barrel, 25%, $1,495. 10%, $2,750. 20%, $2,530.
Quitin' time!!