What package do I have?

I know it's an ignorant question. But when I was purchasing it, i told to man looking for the vehicle, that I did not care what the package was. I just wanted the cars. The little bits didn't matter to me.

What are the main signs of the ST2 and ST3? I'm pretty sure it's not an ST3, but I'm not sure about whether I have an ST1 or ST2. I want to begin thinking of sell value for the RS release.

It's a 2013.

edit: year