James Dixon cruet set BUT cruet tops are STERLING or?

[Adam.NYC]

The cruet tops on this James Dixon silverplated set have Birmingham sterling hallmarks for 1847 and 48.
But the maker's marks are identified as Old Sheffield Plate in Bradbury's.
Are they sterling or OSP?

Thanks!

[2209patrick]

Hello.

Agree that the D Star S mark was an OSP mark for James Dixon.
Yet, those do look like authentic Birmingham hallmarks for sterling to me.

Have not seen this D Star S mark used as a sterling mark before.
However, apparently, this site administrater has:

http://www.silvermakersmarks.co.uk/Make ... -D.html#DS

Pat.

[Adam.NYC]

Thanks for your response. That is a great resource to use. I thought by the feel it was solid silver but just wanted to confirm.