I have 2 specials. A 24-3, 3” don’t know if it’s a lew Horton or not. Got the fancy finger groove grips though. I just know it is wonderful and shoots fantastic. Loves cast book it’s. The other is a Taurus, 431 blue 3”. Sweet gun. Shoots good with cast and gold dots. Reload for both.
I am almost positive your three inch 24-3 is a Lew Horton commission revolver.
You can post that question along with a photo however on Smith-WessonFoum . Com (not going to look in case it breaks a rule here) and several extremely knowledgeable guys will answer within a few hours.