chinese blue and white export mug with twisted handle

how old do we think this is?

 

I can't help with the age but it is called a Pot de Creme & the pattern appears to be Blue Canton.

https://www.google.com/search?q=blu...=img&ei=rmJQY5pIxvTMAtb8nMAD&bih=937&biw=1920

Here is a little background on Pot de Creme.

https://www.thecottagejournal.com/history-behind-pot-de-creme-cup/

Here is an example of a reproduction made by Mottahedeh. It is shown about half way down the page.

https://www.scullyandscully.com/ins...BVJNAgDX3z7loTCaXEOKWiI4G9UYXlMBoC1IcQAvD_BwE