Pirate chest

A so-called pirates' chest, in oak, clad in iron, with 3 locks and 3 keys, dated 1667, late 17th century. Purchase in 1976 (copy of invoice) from an antique dealer in strasbourg at the price of 4, 800 new francs, which is equivalent today, according to the official index, and taking into account inflation, to €2, 640.