I didn't read any posts or anything but the stats on this are slighty backwords/off. It's Accuracy & Attack +4, Assault: STR & DEX +4 Adds "regen" effect. It looks like you (by you I mean the icon that pops up) don't have the attack from this ring unless you're in assault.
Final reward from ToAU mission, as well as a flag for your mog house (Similiar to windy/bastok/sandy flag from rank 10) and the Glory Crown, no big stats as of now, cept its signed by Naja, and lv 75