The Roman soldiers were paid to go off and fight. They buried the money they were paid and never came back. This was very common. Those coins are worth next to nothing.
I’d like to have a dozen of those “worth next to nothing” coins.
I do not know about the bronze, but if some coins were actually silver wouldn’t they be worth their weight in silver?
In Kuwait, an antique store had a box full of Roman coins. At the time, you could buy a handful for 1 Dinar, $3 USD. Once the Americans found out, they sold out, and any remaining Roman artifacts increased in price.