Orrefors Grey Sommerso Glass Vase by Nils Landberg (1950s)

• Circa - A Latin term meaning 'about', often used in the antique trade to give an approximate date for the piece, usually considered to be five years on either side of the circa year. Thus, circa 1900 means the piece was made about 1900, probably between 1895 and 1905. The expression is sometimes abbreviated to c.1900.
• Sommerso - A method of making cased glass developed in Murano in the 1930s, where one or more layers of transparent coloured glass is encased within a layer of thick clear colourless glass.
• Engraved Glass - The method of decorating glass by marking the surface with a sharp intrument such as a diamond, metal needle or rotating cutting wheel. As pressure is applied to the surface, best results for engraving are achieved if the glass is of sufficient thickness. In the 19th century etching was used to decorate some table glassware that was too fine to take an engraving tool.

This item has been included into following indexes:

• Landberg, Nils (Sweden) - glass makers 7
• Orrefors Glasbruk (Sweden) - vases 128