Antique Pewter has dated this piece to the 19th Century.
A good 1/2 pint beaker, by M Alderson & Co of London, England, who worked 1821-1832.
The beaker has slightly tapered body with a mid banded fillet and stands on a stepped flared foot. The inner base is clearly marked with the makers mark.
M Alderson & Co worked at 16 Great Marlborough St, London.

Provenance:
Albert Bartram collection.
Condition:
Excellent condition with a lightly polished silver grey finish and some small traces of light oxide.
Repairs: There are no repairs that I could detect.
Size:

Height to rim: 4.00 in (10.00cm).
Capacity: 10.00floz.
Pewterer's reference number:
Pewter Society: - PS13873.
Cotterell: Old Pewter: Its Makers and Marks - OP38.
Shipping costs:
UK: £15.00
Europe: £30.00
USA/Canada: £40.00
Other countries: Please ask.
Stock number: P-293b.
Antique Pewter has dated this piece to the 19th Century.
Antique british & european pewter.
You can view the stock and full dealer information on the Antique Pewter Profile Page