A sterling silver oval flask, Thomas Johnson I, London, c.1867, rubbed marks, dents to flask, split to stopper's top, engraved initials to front, height 5.12 in., Wt 111 grams
- Sterling Silver - Sterling silver is a mixture of 92.5% pure silver and 7.5% of another metal, usually copper. Fine silver is 99.9% pure silver, and is relatively soft and the addition of the very small amount of copper gives the metal enough strength and hardness to be worked into jewellery, decorative and household objects.
- Engraving - The method of decorating or creating inscriptions on silver and other metal objects by marking the surface with a sharp instrument such as a diamond point or rotating cutting wheel.
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