I am new to this game, and I'm not sure if this is normal or not, (I haven't paid much attention to the tutorials). The bronze coins will be added after battle and everything, like I would end up with like 96 of them, and then later, they are lowered. It's like they are transfered to silver coins because I get one or more added.
I got worried when I sold many of an item off my inventory and lost all of the bronze coins, and I freaked. I had no idea that would happen. I noticed there is a price on the items, I thought that was the value of how much it would be if you sold it.