Birmingham silver dating hallmarks
For Sterling Silver the items are stamped either '925' or '.925' representing the 92.5% silver content which is the standard for Sterling Silver.For Gold the stamps will ne '9ct', '10ct', '18ct' or '24ct' indicating the purity or 'fineness' of gold in the jewellery.Dublin’s assay office has been operating since the middle of the 17th century and silver is still marked there.Most British and Irish silver carries a number of stamps indicating not just the standard or purity mark (typically the lion passant) but also the initials of the maker, a date letter and the place of assay.The shield will be almost square in shape with a pointed bottom.I was looking for a mid 20th century Birmingham silver date hallmark, but the only Ebay guide on the subject only goes up to 1925.Dublin silver is struck with a crowned harp, to which a seated figure of Hibernia was added in 1731.
A silver object that is to be sold commercially is, in most countries, stamped with one or more silver hallmarks indicating the purity of the silver, the mark of the manufacturer or silversmith, and other (optional) markings to indicate date of manufacture and additional information about the piece.
The "&Co" was dropped in 1855 CHARLES JAMES ALLENALLEN & DARWINLondon & Sheffield Charles James Allen & Sidney Darwin trading as Allen & Darwin.
Bicycle accessories were a later and highly successful line for many years. His address was Wicker St (1849-1851), Andrew St (1851-1855) and Johnson Lane (1855-1872).
In some countries, the testing of silver objects and marking of purity is controlled by a national assayer's office.
Hallmarks are applied with a hammer and punch, a process that leaves sharp edges and spurs of metal.