An early George II silver salver with the Royal Arms, John Edwards II, London, 1730

rectangular with inset curved corners above bracket feet, the surface flat-chased probably slightly later with panels of diaper edged by rococo scrolls, shells, and foliage, enclosing in the center of each sides finely engraved vignettes of the four elements and in each corner a crest under an earl's coronet, the center boldly engraved with the Royal arms with lion and unicorn supporters, marked on reverse and scratched in early script in one corner "John Conley"

very good condition, crisp engraving; Please note that the College of Heralds has suggested the crest is that of Francis Howard, created in 1731 Earl of Effingham and Deputy Earl Marshal.
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The arms are the Royal Arms of England.  The crests engraved in the angles are those of Howard as borne by Howard of Corby Castle, co. Cumberland:
on a chapeau gules, turned up ermine, a lion statant guardant tail extended or, ducally crowned argent, gorged with a label of three points of the last.
The crest is surmounted by an earl's coronet.

This version of the crest, according to Burke's General Armory (1884) is not that used by Howard, Dukes of Norfolk, or Howard, Earls of Carlisle.

Perquisite plate such as this would be issued by the Jewel House to the major officers of the Household, the speaker of the House of Commons, and ambassadors.  John Edwards II was Subordinate Goldsmith to the King, and appears in the Jewel Office Records between 1723 and 1743.