How this effect is made?

While updating Mexico's catalog I've come across some awesome looking coins. But there is one that is so damn beautiful that I was wondering how this effect is made:



Victory looks almost like a sculpture coming out of the coin. How can the proof effect be applied onto a part of the coin while leaving the rest as satin to give it impressive depth?

The dies are polished, then the background has been treated with chemicals to give the Matte finish while the foreground is left untreated giving the mirror finish.

Quote: neilithicThe dies are polished, then the background has been treated with chemicals to give the Matte finish while the foreground is left untreated giving the mirror finish.

I'll try getting one of those... someday. I will save for it and get it when I visit Mexico City so I can buy it at the Minting house at the best possible price (excluding a lucky auction if I ever come across one).

  There must be different versions made, as the one I have looks the same all over ...



 Talking of effects, I always wonder how they made this 1891 medallion I have with parts that stand out ...

 as looking at the reverse picture from above it looks normal until viewed from an angle.


 Finally how do they add the gold to only part of the design? I have this one and have only seen pictures of normal coins without the gold added ...

Quote: ZacUKThere must be different versions made, as the one I have looks the same all over ...

Not the same. The one I showed is the 1 Kilo, which is the only one with a Prooflike version like the shown one.