Roman coin ID needed.

What's this coin worth (if not a fake)? and can anyone tell me anything about it?


It's 21mm and 4.9 grams and described as being Bronze. But I'm not so sure. A brief browse through our own catalogue here gave me this.
https://en.numista.com/catalogue/pieces144941.html
But this is a copper coin.

Hello Kipsley, this is a follis of Magnentius effectively minted in Trier.

Obverse:
Description: Draped and cuirassed bust right with bare head ; A behind the neck.
Lettering: D (-ominus) N (-oster) MAGNEN-TIVS P (-ius) F (-elix) AVG (-ustus)
Translation: "Our dear lord Magnentius, pious, blissful, august".

Reverse:
Description: Two victories holding between them a crown, overcome by a chrism, on wich is written in four lines : VOT (-is) V (= quinquennalibus) MVLT (-is) X (= decennalibus).
Lettering: VICTORIAE DD (= dominorum duorum) NN (= nostrorum) AVG (-usti) ET CAE (-saris)
Translation: "The victories of our two dear lords the august and the caesar".

In fact, this is neither bronze nor copper, but a kind of billion ; numismates say "Ae" to simplify, meaning that it is a bronze-like or a copper-alloy metal. It must contain tin and copper (so bronze) and maybe other metals, and a very little part of silver, which migrates to the surface of the coin when struck.

Your coin is genuine but I don't know what it may worth (they are quite less scarce in France than in Australia for instance).