Very nice example of Victorian Bread Basket. J.S, & S stands for John Sherwood and Sons, a company based in Birmingham between 1858 and 1913. This version of the mark was used between 1865 and 1913 and the mark next to it represents a beaver which was also used as a trade mark by this company. The crown mark was used by the Birmingham Assay Office and normally appears on Stirling silver items. The last mark is a Gothic letter possibly a "D" used in this form as a date letter on Birmingham silver produced 1827-28 which predates this piece.
This particular piece would be circa 1890 - 1910