Is this 1805 Sheffield Sterling?

[testing123]

NOT A DETECTING FIND, BUT SOMETHING THAT CAME THROUGH THE SHOP TODAY. I believe it's 1805 Sheffield. Is this correct? Thanks for any input!

 

[EnvoyToTheMolePeople]

According to the diagram, it sure does look like you ID'd it right. It looks a little newer than 200 years, but that's just a feeling. How much does it weight?

 

[testing123]

According to the diagram, it sure does look like you ID'd it right. It looks a little newer than 200 years, but that's just a feeling. How much does it weight?

It comes in at 19.8 troy ounces total. Some of the elements are a bit confusing... the handle seems like it'd be light, the top part of the lid (black knob) may have been replaced?

 

[CRUSADER]

Yeap spot on with the Hallmarks, normally the lid show have a matching pair?
Not sure about whether the top knob is replaced or the handle but they don't match & should (in terms of material & colour)