Antique Pewter has dated this Antique Pewter Flat Flagon to the 18th Century.

There are no visible maker's marks, the the flagon is identical in style to those attributed to William Eddon, London (fl.1690-1747), (PS3067),
Circa 1720-30.
There are no makers marks that I can find.
Condition:

good condition with a very lightly polished silver grey finish and some traces of light oxide. There are a few historic small dents to the drum and foot.
Repairs: There is an old repair to the underside of the lid where attached to the thumbpiece.
(The condition and old repair is reflected in the price).
Size:
Height to top of thumbpiece: 23.5cm (9¼in).
Base diameter: 6.25in (15.7cm).
capacity 60 fl.oz., height
Stock number: P-320.
Shipping costs:
UK: £15.00
Europe: £30.00
USA/Canada: £50.00
Other countries: Please ask.
Antique Pewter has dated this Antique Pewter Flat Flagon to the 18th Century.
Antique british & european pewter.
You can view the stock and full dealer information on the Antique Pewter Profile Page