The middle top configuration is merely a symbol chosen by the firm as part of their mark.
The names of the two cities indicate the locations of the two factories Mappin and Webb had. The number W10617 is the firm's ID for the design/pattern of your piece. Mappin and Webb's dating system has not been deciphered as of the present.
Old Sheffield Plate and Electroplated silver are not subject to this practice and the regulation issued by the authorities had the main objective of preventing possible frauds by unscrupulous sellers of plated ware. & Howson Hayne & Cater Hennell family Holland Aldwinckle & Slater Horton & Allday Hukin & Heath W. Jamieson Lambert & Co Lamerie Latham & Morton Levi & Salaman C.
The best-known initiative is the prohibition (effective from c.
An approximate date can be determined by examining: - the style of the object- the presence or absence of the crown (before or after c.
1896)- the date of registration of the pattern at the Patent Office - the presence of a dated dedication- the date of the event (example: King/Queen Coronation or Jubilee commemorative spoons).