I recently bought this metal jug in the shape of a bulbous milk churn because I liked its shape and I thought it might be an Edwardian visual pun.
It has two numbers impressed within circles on the base - a “1” over a “2”.
It stands approximately 12 cms high.
I know nothing about its age or provenance. I would appreciate any details.
Jenny Nicholson.
This type of jug is commonly called a Jersey Jug.
I would imaging the 1 over 2 on the base indicates it hold half a pint, judging by the height you’ve given.
Hope this helps
Emma 
Thank you Emma.
Your information has helped me do a bit more research.
With no other marks, it is a bit difficult to determine what material it is made of but I think it might be silver plate.
Jenny