Dating armours is never easy, especially when trying to draw the line between Momoyama and early Edo, since Momoyama was such a relatively short time frame (and hence my comment that this dou "could" be Momoyama). In any event, I was looking at the shape and composition of the mune-ita, the waki-ita, the oshitsuke-no-ita and the shape of the dou itself to form an opinion. In doing so, I would say that the dou isn't "strongly" Momoyama and could also very much be early Edo (first part). After all, who can say if something was made in 1613 vs. 1618?