George I Silver Tankard, London 1717

• Britannia Standard - A higher grade of silver than sterling silver. Britannia standard silver contains at least 958 parts per thousand of pure silver, while sterling silver contains at least 925 parts per thousand of pure silver.
  
  The Britannia standard was obligatory in Britain between 1697 and 1720 and after that was optional, so there are very few silver items that come onto the market that are Britannia standard.
  
  Not to be confused with silver plated Britannia metal items, often marked as "EPBM", a pewter type alloy, that when unplated can be temporarily polished to a silver-like lustre.
• Engraving - The method of decorating or creating inscriptions on silver and other metal objects by marking the surface with a sharp instrument such as a diamond point or rotating cutting wheel.
• Tankard - A tankard is a drinking vessel for beer, ale, and cider, similar in shape to a large mug, and usually with a hinged lid. Silver tankards were in use in Britain and other parts of Europe from at least the sixteenth century, pewter tankards probably from the thirteenth. In the 19th century a number of ornately carved ivory tankards were produced, but these were designed to demonstrate the skill of the carver, rather than for day to day use. The shapes of tankards vary, sometimes globular, sometimes a tapering concave. For those with lids, the lid usually includes a thumbpiece that the drinker can hold down to keep the lid open. Variation in the design of the thumbpiece include wedge, ball and wedge, ball, hammer head, bud and wedge, double volute (scroll), chair-back, ball and bar, shell, double acorn, corkscrew, and ram's horn.

This item has been included into following indexes:

• Payne, Humphrey (London) - silver, maker or retailer 4
• tankards - silver items 382