Though hardly the most accurate of chronometers, the sun and moon, which feature on the coin’s reverse, along with an hourglass and watch mechanism, were widely used until the 16th century. It was determined back then that an hour lasts 60 minutes, though time has since been increasingly sub-divided, first into seconds and eventually nanoseconds. This has had the effect of making time ever more precious, with the phrase “time is money“, famously coined by Benjamin Franklin in 1748, being more pertinent today than ever. Standing for lasting value in a fast-moving world, however, the coin shows an old-fashioned clock face in the niobium core and a chronometer in the outer silver ring of its obverse, while the reverse also shows a time spiral and the time in a selection of famous cities.
This coin, like the Niobium coin issued in 2010 and dedicated to the "Renewable Energies" takes part to the Marvin programm in favour of the environment; Marvin will devolve part of the incomes from the sale of this item to environmental initiatives.