Unusual Ring - Help Identify

[floridadez]

Hello All, thank you in advance for your help with this.
Trying to understand more about this ring. The only markings I can maybe make out is 925 on the inside of band and the front that looks like a pantheon. Have no clue what is on the opposite side though.
Anyone ever seen a ring like this?
Thank you!

 

[Starstruck8]

The reverse is copied from the ancient Athenian tetradrachm. It shows the owl of Athena, an olive sprig, and the letters A-TH-E in Greek.

I've never seen such a ring before. My guess (just that) is that it is some sort of tourist souvenir. This would be consistent with having the Parthenon on the front and sterling silver mark 925 on the band.