Mine was around $575….but that was 5 years ago. Given inflation, I think you did just fine. Less common, condition seems good enough to appeal to a collector, looks like box, papers?
I was on one of those kicks to pick up examples of all the 39 configs. All started from blurry internet pics on a “39” auction that ended up being a pre 39. So I had to pick up a shooter, then my father sold me his nickel 39-2, and a stainless…. Since it looked like I will never see (much less afford)an original steel 39, hunted for a 539.