Until we see ANOTHER different picture of the left side of that pistol, it's really quite fairly in the $300 range depending on the buyer. Frankly, the two pictures are far off one another, the left side picture actually makes the pistol appear as if it has rust on it. I hope that it does not. A second picture of the left side would help.
If the left side actually looks in person the way it appears in the picture, I would be thrilled to get $300 if I were selling it. And if I were taking it in to a gun store or a dealer at a gun show, I would NOT be getting $300 for it, if it's showing rust as the left picture appears.
I can only guess that it is an anomaly with the left side picture. The right side picture makes it appear in better condition. Even still, it has more value as a shooter and a "neat older pistol" and not a lot of collectible value. Anyone who wanted to own an older handgun for collecting or value is going to demand better condition than this one shows.
Beyond all the "value" talk, we are still discussing an icon in American history and you should be happy to own and shoot this pistol!

The extractor was changed and improved and can sometimes be difficult to replace, but you can hedge your bet by treating YOUR extractor properly and
never drop the slide on a chambered round or cartridge case. The extractor is absolutely designed from the start to strip a round from the magazine, under the claw end, and NOT at all designed to violently "snap" over the case rim. If you only ever strip rounds from the magazine as designed, you may see another 50 years of service from that fine pistol.
We lovingly call pistols like yours "shooter grade." That means if you want a classic and iconic piece of history and you want to shoot it and enjoy it, THIS one is what you seek because you don't have to throw big money at it to buy it and you needn't worry about putting wear on it and "reducing the value." These guns are very much loved by shooters.
"Shooter grade" guns are not loved by collectors and those who attach high prices and "values" (real or perceived) to handguns. Collectors do have a use for some "shooter grade" handguns, but FAR MORE when they are much, much more rare and much older. A "shooter grade" Registered Magnum from the mid-1930's has tangible collector value and price. But a Model 39 from the 1960's has little. We have to remember that S&W made somewhere near
400,000 of the 39/39-2 series of pistols. Like a S&W Model 10 (or pre-Model 10/K-38), it needs to be a rare variation -AND- in high condition to have a high dollar value. But also like a Model 10.. they made so many because they are
fantastic and that is where the real value exists. As a shooter!
