Many years ago I had a 39-2, then sold it. Later, I bought a 439. My 439 has the round trigger guard, fixed sights, lanyard loop, and a single sided safety. The 39-2 and 439 tend to be good handguns, not necessarily target pistols, but very reliable and capable of combat accuracy. The 439 added a firing pin block and changed the rear sight. The 439 fixed rear sight is drift adjustable by loosening the set screw and drifting the sight, much simpler and far fewer sharp edges than the semi-adjustable rear sight on the 39/39-2. The 439 could be had with a fully adjustable rear sight. This is a big sight with the protective ears on either side of the sight base and the slide will have a much taller front sight.

For a 98% model 439 with two extra mags, $425 is a good price. Genuine S&W mags tend to go for $30-45 on eBay.