At that price I'd buy it. It's not a collectors item, but it's a Lew Horton built pistol, and well worth that price.
It'll be a great shooter.
This is what the S&W catalog says about it.
Caliber: 9mm Parabellum. Model 5906 frame with Model 3914 slide. Special for Lew Horton. Stainless steel frame with blue carbon steel slide. Novak Lo-Mount fixed sights. Special for 1990.
ANIB Exc VG
700 500 350
Product Codes and Features by Year
103048 4” 1990, 1st trigger guard