Powder Flask.Indian, Indonesian,Nepalese ???
 

I have this interesting powder flask probably made from a Water Buffalo horn that I am uncertain of the origins. The writing on it would indicate where it came from, however, I am unable to identify it. It is huge; 19" long and 5.5" tall & 3.5" wide, so maybe it could be a water canteen.
Any help would be appreciated.

Can’t read it, but pretty sure the inscription is Tibetan

Thanks, that helps in narrowing the search.

That was a good lead; I found a similar one attributed to an Exhibit from the Peabody Museum.

I googled a bit as well and saw some similar pieces but nothing with an inscription like yours. Interesting! Now just to find someone who can read it ...

I should have quit while I was ahead. The first reference I found on the internet stated that it was a Tibetan 19th Century powder flask on exhibit from The Peabody Museum, but I couldn't leave well enough alone. I next found 2 other references that stated that it was Tibetan and 19th century, but it was in fact a beer-drinking horn; Chhaang beer to be exact. These claims were made by "Hundred and One Antiques," and "Michael Backman ltd.," of London; based on what they were asking, maybe it is a drinking vessel, maybe what is written on the side is "Chhaang Beer, the King of Beers."