Featured HELP! GUNPOWDER CASK/BARREL w/HANDLE? WATER CASK? GAS?

I won this at a auction for a antique shop that was going out of business. At first I was excited - I thought I had a civil war era gun powder cask, but then I found a small faucet on the side & I started thinking it was a water cask.
BUT, then I found that the cap was made of metal - and now I'm thinking it's too new to be civil war - especially if it was made to carry extra gas! But the faucet is so small - trying to fill up a gas tank in war would take a awful long time as it trickled out of that little faucet doesn't make sense either.
Can anyone tell me what I have - and how old it may be?
Thanks - I appreciate any help.

 

Dimensionless

 

Looks to be sitting on 1’ tiles.

 

Sorry! - 17.5" long x 9.5 -10" wide

 

That's the barrel only

 

I think that petcock would be 1920 or later

http://www.thepirateslair.com/nautical-naval-antiques-rum-water-keg-cask.html

 

Looks like good info terry posted in that link. Neat item!

 

That's it! Can't find a red one though - any ideas about color? It appears old?

 

imo it has been painted red as the petcock wouldn't be painted

 

at some point it was painted over.....it didn't start that way..

 

Good link, Terry.

Any odor inside? I'd think if it was used for gasoline, kerosene or rum, even a long time ago, it might still have some odor. Water of course would not have an odor....but the red paint suggests something other than water to me, much as present-day gas cans are generally red.