I found this coin going through my collection, so I have researched it. I only found coins similar to it. I wonder what symbol is below the head and what the coin is.

I do not know. You might post this coin at COIN TALK, where Doug Smith and other experts hang out daily. They would know by simple inspection. I would have to see the coin in order to read all of the inscriptions and then do an inscription search. 

Hi Mike here. If your going to collect these buy a book that will help you. To see if it's real bring it to a dealer they may have a book there to check it. They do make fake of these coins so that's important. If you don't have a dealer by you you will have to send it in to make sure. It's a nice coin good luck with it. Mike.

Thanks! I haven't been able to find it online yet. Just trying to figure out the symbol beneath the head on the first picture.

@CoinFan2017

 It seems to me after further research, the coin is a denarius with minerva holding trophy and spear. The obverse looks like the head of apollo. The thing that I haven't figured out is the symbol underneath apollo's head. I am wondering that since I haven't been able to find this exact coin, that it is possible that it might be fake. Hopefully this helps.