Delicate little cream jug with mask spout??Unmarked

Got a little jug today hope i am not putting to many things on here
but has been a great resource i am not sure of how many your allowed??
Anyway it's an un-marked cream jug so left to my vast knowledge
I am thinking it maybe Coalport but that's as far as i have got any suggestions of how or
where i might look for a candidate? Its hand painted i think and 4" tall

This is lovely. The mask is fairly common but the handle and the enamelling set it apart in my opinion. Could be it be Paris? I am at a bit of a loss with this one.

I see a white with gold Greek key trim on ebay.ie listed as Coalport, but it's unmarked, and no reference given. The same page has a totally white one.
https://www.ebay.ie/sch/sis.html?_itemId=161264761464&_nkw=Early+Antique+Staffordshire+Jasperware+Jug+serpent+Handle+Spout+Circa&_mPrRngCbx=1

Hi Thank you for your comments they are most
welcome it seem's Coalport might be a candidate
i will try and look down this route after all i amight
slowly be getting somewhere with pottery as i said
It looked Coalport like :) Thanks x