John Emes father and son specialised in flagons to their own design with distinctive hammered drums, they are rare perhaps ten to twenty known. For similar see The Worshipful Company of Pewterers of London, catalogue No.S2.204.
For similar examples see Hornsby, Pewter of the Western World, Fig. 649; Peal, Pewter of Great Britain, p.89-90. and British Pewter, plate 7 opp p.64.