What is it??

So I acquired this wonderful old metal can.  The person I bought it from said that it was an oil can and that she believes all of the parts are with it.  I have searched online and have been unable to find either an oil can or a gas can like it.  It is gold, metal, and has another metal piece inside of it.  It is about 5.5 inches tall (not including the funnel) and 6 inches in diameter.

Is it really an oil can or could it be something else?  Please share your thoughts in the comments as I am anxious to figure out what this is!  I appreciate any information you have to share.