I was curious to look for archaeological depictions of later Gallic armor when I came across depictions of captured Gallic trophies depicted on Caesar's coinage. There are quite a few of these, generally following the same formula. However, something bothered me.
https://imgur.com/a/jo0Yhdi
I'm focused on the torso armor. A few of them seem to obviously represent mail. No mystery there. However, the vast majority of depictions show something different. Many of them appear to be striated, and some are smooth. They really don't look like the representations of mail. However, they also don't look like the type 4 (tube and yoke) armor present in earlier La Tène imagery. This is most likely armor, since it is depicted with other arms and the mail examples are very clearly armor. What do you think this is?
I know there is artistic license, but the prevalence of the striation and the clear depiction of mail in some examples makes it seem as if they represent different things. These coins also have lots of variations, and I'm guessing there were more than a couple artists.
Why the striation? Could this be some representation of mail? It's certainly a possibility, but there are also examples that depict mail in a far better way. I also considered that it could be an organic armor. However, as previously mentioned this depiction doesn't line up with any other examples I know of.
What do you think?