Silver plated Mini Keg

 Picked up this keg at a local auction for $50.  I dont really know anything about it, neither did the auctioneer.  Im interested mostly to know what it is, and what it was used for.  What its worth would be a bonus.  Any information would be greatly apprecaiated, I have never seen anything like it.

the faucet in the front is functional, and there is a band that goes around the circumference of the barrel with somewhat detailed pictures in it.  Each picture has the same charector in it in what seems like different locals.  

There is an etched in serial number on the bottom and an impression that says "Century Silver [something]te"  Cant make out the third word completely maybe "Plate"?

any info would be appreciated!

Thanks,

-Ryan