Found by Brian Pollard in a junk shop in Coventry in the 1960s.
They're 'pince nez' glasses and the bifocal part of the lens is attached to the main with an adhesive- we don't know exactly what. The frame looks like it's made of gold plated brass or copper alloy, with some writing on the bridge across the nose. They attach via a gold-plated safety chain which hooks behind one ear.
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The bifocal segment was most likely bonded using Canada balsam
http://en.wikipedia.org/wiki/Canada_balsam.
That such very fine slivers of glass survived - intact and together for well over a centuary - says much for 'old' technologies.
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http://en.wikipedia.org/wiki/Canada_balsam
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