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This technique (spinning), a follow on of the Industrial Revolution widely applied in 19th century, smoothes also the pot's inside, avoids soldering and hammering signs (unless later intentional additions) but produces objects of meagre solidity and weight, requiring a double hem to reinforce the edge (obviously, 'spinning' technique may not be applied on a 1745 coffee pot). Close research of possible forgery or transposition and/or alterations of hallmarks Some further caution is requested examining items of good weight made in England between 17, owing to 'duty dodging' practices.
In 1720, when 'sterling' standard (925 ppt) was reinstated after the compulsory use of Britannia standard (958,4 ppt), a 6 pence duty per troy ounce of silver was imposed on silverware production and trade.
The last hallmark, completely unreadable, should be the crowned leopard head, symbol of the London assay Office since 1550.
Sometimes this particular pattern has no hallmark inside the lid (Ian Pickford, 2003.
From this point of view our coffee pot looks to be a piece of great gauge and quality as anyone would expect from an English silver of the first half of 18th century. Hallmarks research and their examination (individual and as a set) Now we research coffee pot hallmarks.
Hallmarks in exposed positions are often rubbed and difficult to read on antique silver, due to the repeated polishing of the item.
The second hallmark is slightly rubbed on the upper side, but its bottom shape allows its attribution to the 14th cycle of London hallmarks (it was used only between 17) (see
In this mark (not well visible) the lion is looking straight front (this hallmark was used in London until 1820). This mark is quite rubbed but a 'k' letter in the shape of the 14th cycle of London hallmarks may be easily seen.