This is personal opinion only, but the hammers with a "flat", as opposed to those that are of a half round shape, are the most beautiful. The Williams & Powell posted by Joe, the Reilly in last pic on the bottom right posted by Gene, and the Pape posted by bsteele exhibit the style hammers that are by far the most exquisite and most pleasing to the eye, IMHO. The flat surface allows the engraver to change the engraving from one style to another. While the half round hammers can exhibit superfine engraving, it's almost gets boring in a sense, to me. Kinda, too much of a good thing. I dunno, hard to explain. Again, just a personal preference.