It was listed by Gillers Antiques Ltd. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.
Gillers Antiques Ltd has dated these Silver Wine Coasters to the 1750s.

Made by Thomas Daniell & John Wall and assayed for London, 1782.
Hallmarks are very rubbed. One coaster has an identifiable letter “g” for 1782, and the other coaster has faint “TD” over “W”, which corresponds to the mark of Thomas Daniell & John Wall.

116 g
3.5 cm tall
12.5 cm overall diameter
11.5 cm internal diameter
One coaster in good antique condition with a small split in one place and small loss. Other coaster has a large area of loss and a smaller. Both a bit uneven in shape and showing wear to bases.
Gillers Antiques Ltd has dated these Silver Wine Coasters to the 1750s.
You can view the stock and full dealer information on the Gillers Antiques Ltd Profile Page