There were many different front sight blades offered by S&W as factory options throught the '30s and 40s. King, Sheard, Paine, Call, McGivern, Lyman, just to name a few. It is very possible that your Sheard Gold Bead front sight came on the gun right out of the factory. At any rate, I am glad to see you went ahead with the purchase. You will enjoy shooting and admiring that revolver.