thanks all, yeah it is the 716 (where 716 comes from i don't know...) It says R428 on the rim I guess for 28H? I contacted the seller and I don't need to use nipple washers, just hexagonal nipples and a dt swiss hexagonal spoke wrench since the nipple doesn't show, I need to adjust the nipples from the top of the rim, hence the special spoke wrench... I also was wondering why I didn't need washers, but after some research most if not all deep v rims have all their holes directly in the center and not offset so it is less likely that a nipple will tear through.
thanks again...