Welcome to the forum , tink .
The main body of your item appears to be one that a number of methods were used to produce , a 'fusion' if you will , of the specialized art of repousee (metal-forming from hammering out a flat sheet of metal ; from the inside of the item , to make highly detailed forms on the exterior of an item) & the rather crude skill of 'stamping' metal .... too crude to be considered 'engraving' (which is , generally , cutting away metal - not unlike wood carving) .
You could always remove one of the machine screws , to inspect it & establish the thread pitch with a thread gauge at your local hardware store .
I'll guess that it will come up as a modern metric thread .
My guess is that you've got an item intended for the tourist trade , late 20th century .
I think it's possibly a depiction (i.e. - replica-ish) of an oil decanter .
Not including the handle assemblies , is it possible that this item was made of 3 pieces (top portion , main body & base) ?
I think I see a rolled joint between main body & top portion , which is why I ask .