I have an older friend who is a very sharp and spry 95 year old. He has a beautiful pre model 36 flat latch .38 Special that he bought new in the 1950's. Sometime, decades ago it was dropped and broke the spur off of the hammer. I'm not sure if it had a wide or narrow hammer spur. When looking at Numrich I see they show a hammer that says "Hammer Recessed For Ball" I have not had the sideplate off of his revolver but will a newer model 36 hammer fit it?. I have some more modern J frame hammers but I wasn't certain of a design change and when it occurred.