Date 1766-7 absolutely spot on and maker a little dubious but could be Matthew Lofthouse who was a prolific maker of drinking vessels in the early-mid 18th century. As I always say..don't take my word for it but that's the best I can do with my ageing memory. Best wishes, Mike. .
I think yours is an unregistered mark attributed to either Jacob Marsh or John Moore. They were both active in this period; Marsh having an item dated 1763 and Moore one dated 1767. Marsh is the more probable one as his item was a mug. I hope this helps. Dave .
Good thinking Waylander but sides of it are a little too straight for my liking and I have never run across a single 'W' mark on drinking vessels before. What I do also notice is that there may be a 'ghost letter partly under the star...can anyone else see it or is it my imagination? Best wishes, MIke. .
Might be Morley, but I doubt it. His first mark was not entered until 1775 and was in partnership with G. Baskerville. Also his mark had a pellet between the T and M not the clear star in this example. The ghost mark could be an I making it I*M for Jacob Marsh ca. 1763. Dave .