Romain Jerome purchased a piece of the hull weighing about 1.5 kg (3 pounds) that was retrieved in 1991, but declined to identify the seller. The metal has been certified as authentic by the Titanic's builders Harland and Wolff.
To make the watches, which were offered for sale for the first time in Basel for between $7,800 and $173,100, the Swiss company created an alloy using the slab from the Titanic with steel being used in a Harland and Wolff replica of the vessel.
The gold, platinum and steel time pieces have black dial faces made of lacquer paint that includes coal recovered from the debris field of the Titanic wrecksite, offered for sale by the U.S. company RMS Titanic Inc.
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