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Pontil scar on the base of a free-blown glass bowl. A pontil mark or punt mark is the scar where the pontil, punty or punt was broken from a work of blown glass.The presence of such a scar indicates that a glass bottle or bowl was blown freehand, while the absence of a punt mark suggests either that the mark has been obliterated or that the work was mold-blown.
Domestic windows were generally small and were made of broad glass or cylinder glass before crown glass was first made in England in 1678. Broad glass is usually around 1.5 to 2 mm thick and uneven, often with scars and marks on the surface where it has been 'ironed' flat, and often has a greenish tint.
Crown glass. Crown glass was an early type of window glass. In this process, glass was blown into a "crown" or hollow globe. This was then transferred from the blowpipe to a punty and then flattened by reheating and spinning out the bowl-shaped piece of glass (bullion) into a flat disk by centrifugal force, up to 5 or 6 feet (1.5 to 1.8 metres) in diameter.
The Reims windows still used the same 'two lancets plus oculus' pattern (as in the Soissons example above), but now the glass panels were held between narrow stone mullions made up of carefully shaped lengths of masonry (fitted together with mortar and metal pins) quite distinct from the wall surrounding them.
A mark is a written or imprinted symbol used to indicate some trait of an item, for example, its ownership or maker. [1] [2] Mark usually consists of letters, numbers, words, and drawings. [3] Inscribing marks on the manufactured items was likely a precursor of communicative writing. [4] Historically, the marks were used for few purposes: [5]
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William Holland's stained glass was exhibited at the Great Exhibition of 1851 which was held in Hyde Park, London, from 1 May to 15 October, and is found in the Official Catalogue . [9] The catalogue lists exhibitors and also a description of various methods used to produce stained glass windows. Glass is found in Section III, Class 24.
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