Notorious for running the distilleries that pump most of the taverns in Vana'diel with fine alcoholic beverages. In the case of wine, he squishes the grapes himself!
It's found in Dynamis - Jeuno, which is one of 6 Dynamis areas that can only be accessed upon reaching Rank 6 and level 65 and zoning into Xarcabard for a cutscene, then recieving a key item from the Trail Markings at any of the major cities.
And it's level is not determined, and I doubt it ever will be. All of the mobs in Dynamis check as Impossible to Gauge, and are taken down by multiple alliances at a time so that they die quickly. It is likely that no mob in Dynamis will ever have it's level figured out, at least not in the near future.
And per it's drops, it will randomly and rarely drop 1 or more of them. Normally it will not drop anything, but on the rare occasion something does drop, usually it's one or two 1xbyne bills, or -one- of the AF2 pieces.
Edits: Spelling and fixed the byne bill statement.