How were desk seals used?

A user melted a stick of sealing wax over a letter or document using a taper or candle. Once a pool of wax formed on the paper, the user pressed the engraved matrix of the seal firmly into the molten surface. Upon cooling, the wax hardened to retain the raised impression of the intaglio design. This ensured the contents remained private and confirmed the sender's identity.

What materials do collectors look for?

Collectors encounter seals fashioned from sterling silver, bronze, brass, steel, and gold casing. Handles and matrices frequently feature carved hardstones such as carnelian, chalcedony, bloodstone, agate, and soapstone. Some unusual examples incorporate organic materials like amber, mother of pearl, and treen wood. Metal pieces often take figural forms representing animals, historical figures, or novelty characters.

How do I date an antique desk seal?

Dating relies heavily on hallmarks stamped onto silver components, stylistic traits associated with periods like the Georgian, Victorian, or Edwardian eras, and the method of construction. Silver pieces made in Britain often carry assay office marks and date letters that pinpoint the exact year of manufacture. Stylistic shifts, such as the natural curves of Art Nouveau or the geometric lines of Art Deco, also help establish the chronological origin of unsigned examples.