A two draw silver plated spyglass signed, ‘Callaghan, London’. It measures 11 cms long drawn out and 6 cms closed with an aperture glass of 3.5 cms. Black enamelled brass body with an ebony eye piece. A couple of tiny dings to the barrel.
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I live in Lancashire (U.K.) and have been a dealer and collector of scientific and nautical instruments for a number of years. My stock has included some fine items from museums and colleges, which were surplus to their requirements. I occasionally purchase some interesting items from abroad, having established some reliable sources.