Antique Pewter has dated this piece to the 18th Century.
The mug has a slightly tapering plain body and stands on a stepped foot. The handle has a tongued thumb rest and a ball terminal at the lower end. There is a faint makers mark to the inside of the base.

An identical mug is published as item 150, page 58 in 'Early English Pewter Drinking Mugs' by Carl Ricketts.
Provenance:
Albert Bartram collection.
Condition:
Excellent condition with a lightly polished silver grey finish and some small traces of light oxide.

Repairs: There is a very small repaired split to the righthand side of the handle (see images).
Size:
Height to rim: 4.50 in (11.50cm).
Capacity: 20.00floz.
Pewterer's reference number:
Pewter Society: - PS17822.
Cotterell: Old Pewter: Its Makers and Marks - not recorded.
Shipping costs:
UK: £15.00
Europe: £30.00
USA/Canada: £40.00
Other countries: Please ask.
Stock number: P-248.
Antique Pewter has dated this piece to the 18th Century.
Antique british & european pewter.
You can view the stock and full dealer information on the Antique Pewter Profile Page