Autobot Symbol in TF Prime

I just noticed something...in the story of Orion Pax (told by Ratchet) there's a shot of Megatronus, the gladiator, in front of a huge crowd...and on the left of the screen, you can see an Autobot symbol on a far wall....did those exist then? The way the story is told, that shot seems like it exists before Orion and Megatronus meet...