[Austin W Hogan]

Richard; The end of the primer pin is very neatly rounded and smooth, and fits into a similar recess in the half inch long rod ( anvil?) that is hit by the hammer. There is no graininess associated with a break on either piece.
The compressed picture on the web does not really convey the radius, but if you look closely, you will see the ring around the pin where the anvil? was swaged on.

Best, Austin