UPDATE: Thanks to Maththththth and erna for photos to clear up my confusion:
So obviously the one I was questioning below is just missing the little 'C' button decal..
..what is going on with that rear seat stay??
More specifically, it looks like there's a seat binder bolt but also another bolt of some sort to attach the rear stay to the ST. Granted it's a shitty photo at best but I've seen these Cinelli's in person and don't recall seeing one with anything like that going on..