User blog comment:Salubri/Hollow. Arrancar, Espada & Vasto Lorde/@comment-1268838-20100818173424

True. Yammy's number still confuses me, given that his statement about the Espada ranking system differs from Shawlong's in almost every way. If that's the case, then he could very well be the oldest Arrancar in Aizen's army. I doubt we'll get any details until the Hueco Mundo portion is wrapped up though.