Unknown Very Detailed Sterling Teapot and sugar and creamer

Hi all. I came across this set and can only make out part of the hallmark. on the left is a cursive B and on the right is a cursive S. in the middle is something in a circular shape but its too faded to make out…hoping some one recognizes it. i just pictured the sugar container. these pieces are huge and heavy. the one shown is 25 troy. are they worth anything besides melt? and does any one know the hallmark?

thanks.
001.JPG
2.JPG
004.JPG