The emblem was on the left side of the slouch hat 1898-1904, then moved to the front in 1904, then to the front of the 1912 campaign hat (Smokey)l.
The 1898 - era hat had more of a central, fore/aft "crease", and the sides were pinched in as well - though many re-formed to their individual taste, including some even had "Mounty" (3-dent) Montana Peaks (4-dent) way before they were "regulation".
The SWA-era emblems were bronze - the easiest way I found to get this color is use a brass emblem - or strip off the black coating, then use a cold bluing solution (like Birchwood Casey). Use a little steel wool to wear off some of the color.
S&S used to have some repros of the old style emblems (in brass) Haven't checked lately... The globe is more prominent. Whether the globe is bigger than the current, or the eagle and anchor are smaller, I couldn't say; plus the eagle's wings are "droopy". The globe also had longitude lines cast in, as well.