A Fortin à Paris marble and gilt bronze clock, estimated at €4000 at Wettmann.

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The Wettmann saleroom in Essen, which has been entrusted with the clock for the auction on June 17, attributes it to Augustin Fortin, the great-grandson of Nicolaus Fortin who had set up his workshop in Paris sometime in the early 18th century.

Augustin was known not only for such decorative mantel clocks, but also for timepieces with complicated astronomical mechanisms as well as celestial and terrestrial globes.

The half-hour striking clock, which can be dated to c.1775, has no such extra features, however. The guide is €4000.