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View of the mechanism of the Boston Time-Ball, Massachusetts, Boston Time-Ball, page,
LZT26B09_397

View of the mechanism of the Boston Time-Ball, Mas...

Jean-Simon Bourdier, died 1839, Clock in which the timepiece forms the weight of the pendulum, on an oval white marble base
LZT19B51_203

Jean-Simon Bourdier, died 1839, Clock in which the...