Just from what I can see, It is an “adoration of the Eucharist” metal from the symbols on the back side.
The front side depicts Jesus wearing a crown on top of an icon representing a tree. Each side of the tree there are 6 figures. These 12 figures represent the 12 apostles.
It looks pewter which could date this as colonial.
It is catholic and does resemble French made religious metals I have seen. Although similar French Adoration of the Eucharist metals have much more detailed as far as the icons go BUT than being said, these icons do match the symbols of these detailed metals just with less artistic design.
This is a great find and carries some history with it.
An item like this was likely blessed. Treat this with respect as well as how you display it.