I've been making wine for a while and other brews, I have not a clue what type of keg this is.
Its an An-Bu keg 15-15.5 with a bung. Ive never seen them with bungs.
I used to use a Hoff-Stevens keg--it was my intro to kegging. You need to find a source for the bungs and learn how to remove them (it's a pain in the ass) and cleaning them out is a bit of a pain as well. "Golden Gate" kegs are slightly different, but the principle is the same.
I've seen them cut lengthwise and made into grills. Maybe that's your best bet?