So it looks like Daido's using a silver tipped Eternal Memory then? Which might also mean that he threw it away when he got the T2 or it got broken somehow.
If Daido is using a silver tipped memory, then what the hell does the memory do then? Since the T2 nullified all T1 memories, what does the original Eternal memory do?
Yay my wish of Eternal being a anti-hero/reluctant hero before being a villain came true it seems! Must be something devastating if it turned him evil. What if being called a monster despite his determination to save people caused him to crack and take on the roll of a villain? Kinda like what if a Rider was finally taken over by their sadness and takes revenge on the world.
So...
Would this make Eternal along with Skull to be the first Riders in the timeline? Skull would still be first since he was already around since 1990's with Movie War CORE's story.
Chronologically speaking, I'm sure Sokichi is the first Kamen Rider in the timeline. After Shroud leaves and makes Sokichi Skull, I think Maria takes over after her because she uses Shroud's research to create NEVER's according the A-Z.