Italian ww1 F1 submarine medal question

[Von Thronstahl]

I would like to know more about this medal. There is no info on the web. There are literally hundreds of similar medals on the market. Every unit or ship has one.  Are they commemorative(veteran pieces coined  post ww1 or ww2?

 

 

[LeeW]

This is a fantastic medal you have here - it is for the Italian submarine F1, and was made by S. Johnson for the sub in 1916. And, you are correct... all the Italian submarines had them!