Actually, I did a little research and found some info on the relic I found ( researching was fun)
It was actually a "medal" given to those that attended this convention. It wasn't a 25th jubilee for the Lions, it was a 25th jubilee for the Maryland-Deleware group (MD -22) or associaton of the Lions. It was their 25th jubilee. It had a ribbon attached and then a clasp and pin at the top of the ribbon to pin it on your lapel. I don't have the link right now but I will post it later with a picture of it when it was new.
The picture shows a golden brown color to the medal so we were thinking it might be brass. Under the dirt it is black. It sure "rings" like silver and the information we found said "silver favors" were given out at the convention though we are not sure if this was the "favor".
It's VDI was on the silver end but of course we know that can vary.
Any suggestions for cleaning

?
Optic