I have 606xx, which shipped in December 1913, so yours is likely from early 1914. The smooth wooden stocks are not original, by the way; they come off a WW II era Victory model. I also think your gun might have been refinished. The combination of the finish flaking off below the cylinder, yet no turn line, does not bode well. As for value, I'm not up on prices for these, but likely only in the 200's as a shooter (for someone who reloads; the ammo is pricey and not that common).