Portlight, Round patent glass for a porthole, sphere with an edge on one side, matte on the other side, with a rather irregular elevation in the middle., anonymous, United Kingdom, c. 1827, glass, h 4.6 cm × d 16.1 cm
Keywords:
Portlight, Round patent glass, porthole, sphere, edge, side, matte, irregular elevation, middle, United Kingdom, c, 1827, glass
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