The arms are those of Clive
An identical cartouche, attributed by Charles Oman to Joseph Sympson, appears on a salver of 1733, maker's mark of Thomas Farren, in the Victoria & Albert Museum, illustrated in English Engraved Silver, 1150-1900, 1978, p. 90, fig. 103. A small number of objects survive with engraving signed by Sympson, much of it in vastly differing style, suggesting that he ran one of the most successful engraving workshops in London during this period. An "S. Sympson" (probably Joseph's son or nephew) published A New Book of Cyphers, More Compleat & Regular than ever Publish'd in 1726 (see Christopher Hartop, "Engraving on English Silver", Antiques, February, 1997, p. 343).