I have a teapot of unknown origin. It is marked with a "7" on the bottom and under the hinged lid. There is also an "R" that looks a lot like the 1772 London R and a very very faint British sterling Lion to the right of the R
Can anyone tell me if it is English and what the date might be or maker?
It has been in my family for a long time but we know nothing about it. Any help? Thank you!