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Pontil Marks on Antique Glass Explained

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A pontil mark is evidence from supporting a hot glass object during finishing, often visible on the base.

What to examine

Marks may be rough, ground, polished or incorporated into a kick. Their form reflects production choices, not a universal date.

Avoid the common trap

Mould seams, tool marks, wear and composition must also be assessed; a pontil alone does not prove great age.

Record your findings

Photograph the whole object, the feature in context and a close-up with scale. Note what is observed separately from any conclusion.

Reliable starting points

  • [V&A collections](https://www.vam.ac.uk/collections)
  • [The Metropolitan Museum of Art: Heilbrunn Timeline](https://www.metmuseum.org/toah/)

Identification should combine several forms of evidence. Do not use destructive tests, and seek a specialist opinion where attribution or value matters.

Learn by looking closely

See workshop examinations and restoration details on the [Antique Repair Shop YouTube channel](https://www.youtube.com/@AntiqueRepairShop).