Okay, so now we have seen several images of Tobi/Madara in the past. These are those events.
1. Madara vs. 1st Hokage-Madara is in his real state, no mask, long hair, and EMS.
2. Tobi vs. 4th Hokage-This time, Tobi is concealed with a mask, only shows one regular sharingan, and has short hair...