It’s not exactly a coin, as it has no denomination. (But how else could I categorize this piece, above?)
I was struck by this medal from the wiki summary on the Vatican Observatory. Image credit: By Rc 13 – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=75995170
After the end of the Papal States, Pope Leo XIII reinstalled an observatory, but within the Vatican walls. Light pollution forced a move to Castel Gandolfo a few decades later. Even that telescope is fairly useless, being within 20 miles of Rome. The Vatican now operates a telescope in Arizona.
Back to the medal: who is that woman on the medal? A pagan goddess Urania, the muse of astronomy.
Catholic Sensibility 