Help...I'm Clueless

Can anyone identify this. My father-in-law passed away and this was in some old coins he had. I have no idea what this is.
Thanks
Thanks
"If there are no dogs in Heaven, then when I die I want to go where they went." Will Rogers
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Comments
Jeremy
Of course, it's possible that came out of a set. But I don't recall any sets having medals with pictures of the Mint buildings?
Souvenir medal of some sort, is my guess.
only at the mint between 1971 ( or '72) and 1998. There was another used
in some 1976 sets. These have also been distributed separately. Souvenir
set mintages varied from a few hundred to about 80,000. Most were in the
5,000 to 15,000 range.
Many thanks.