Your S&W .32 HE was made June 11, 1904 as part of a production of 100 nickel plated revolvers with black hard rubber stocks. As said above, S&Ws with features uncommon to collectors show up all the time. It usually just means the factory was using up parts on hand, as they did not like to throw away any thing they could figure out a way to include in the manufacturing process of later models, or a gun was returned to S&W for modifications/repairs. In the case of you gun, if the forged front sight, or the barrel became damage, and it was returned to S&W for repair, I can see that a barrel with a pinned sight could easily have been used to replace a damaged barrel. If that was the case, you could expect to see a factory work code date on the left frame, as suggested above. Also a replaced barrel may. or may, not have the same patent dates as the original barrel. Ed.