By John Greenbank II, Worcester. Mark IG between pellets alongside pseudo hallmarks. Owner's initials SP stamped on rim, later marriage triad STM engraved on back.Touch mark (almost illegible) Six generations of Greenbanks made pewter in Worcester: John II was a city alderman from 1683, d. 1700. An identical charger, but only 16-5/8" in diam, is in the Colonial Williamsburg collection.
Details and more photos.