WL below Fish - Mustard Pot - William Lestourgeon
Grimwade's unregistered mark no. 3893, noted on a mustard pot assayed at London in 1765:
The mark is now thought to be that of William Lestourgeon (William Lestourgeon & Son, and from c.1771 Aaron Lestourgeon), known suppliers to Parker & Wakelin. See Grimwade 3rd edition, page 757.