Marked on the back with several caster marks and on the rim with a four mark with IS for:
John Junr Shorey. Pewter caster in London
Literature:
Cotterel: Page 304, Fig. 4263
England – London, c
Circa 1708 – 1725.
Diam.: 46 cm. (18.1 inches.)
Weight: 2.243 grams.