Very nice find. The reason the stocks are not numbered to the gun, is that they are aftermarket non-S&W stocks. You can tell this by the third screw at the top of the grips. Hard rubber Factory stocks were only the two screw style for the Model 1896. Having said that, I don't think that detracts from the gun or it's value that much, as these 3 screw stocks are quite rare. (See Dave Damkaer's monograph on S&W stocks.)