
here's the pics.
the ones that resemble those Tang guards at the top, the book 'arms and armor' (Cameron Stone) says they're called Shitogi Tsuba. The book's info is dated so there's no connection made to Chinese designs, but it says....
"an early form of guard which was used on ceremonial tachi long after its use was discontinued on fighting swords. The original shape is said to be derived from the ritual rice cake, called shitogi, which was made by squeezing a handful of cooked rice as to leave the impression of the fingers in it. Although this guard is made of considerable thickness it is narrow and afforded little protection for the hand. It was therefore supplemented by a loop of metal on each side"
the guards underneath it, no.2 is of Chinese make, resembles any other Japanese design