Known as a “Dutchman’s Log,” this brass and copper tobacco box is much more than it appears. Designed especially for mariners, the outside of the box has an inscribed speed table to calculate a rough estimate of how fast the ship was travelling each day, and a perpetual calendar that helped the sailor work out the weekday and lunar age for any calendar date. The figures of Julius Caesar, Pope Gregory XIII, and explorer Amerigo Vespucci are engraved on the outsides.
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