ROMAN EMPIRE - NOVEL Constantius I Chlore (293-306). Box of 3 medallions, gilded copper electroplating, reproduction of the Trésor d'Arras, from Étienne Bourgey ND (c.1927), Paris. Av. FL VAL CONSTA - NTIVS NOBIL CAES. Laureate bust, draped and cuirassed right [and two other medallions, Maximian and Diocletian]. Rv. REDDITOR LVCIS - AETERNA - E / LON / PTR. The Emperor on horseback right, with spear, approaching Britannia kneeling before the gates of London. Below, a galley sailing right [and two other medallions, Maximian and Diocletian]. BnF-MMA, Registre Y des dons (1909-1964), 5 January 1928 (Y 6575 to Y 6583); Gilt copper - 23.82 g, 15.57 g and 12.23 g - 41, 34 and 30 mm - 12 h In the original box (lid detached) with three slots for the medallions. With three gilt copper medallions, including the medallion depicting the reconquest of Brittany in 296, numbered 114, 103 and 145, and inscribed E. BOURGEY 7 R. DROUOT PARIS on the edge. Minor loss of gilding. Superb. The Treasure of Beaurains or Arras was discovered by a pickaxe during work on a brickworks in Beaurains (62). This exceptional collection contained jewellery and around 700 gold and silver coins, including 30 to 35 extremely rare gold medallions. The most spectacular of these is the multiple of 10 aurei bearing the effigy of Constance chlorus, illustrating on the reverse the reconquest of Brittany (Britannia) in 296. The set was divided between the inventor, who sold his share to the town of Arras, and the owner of the brickworks, who entrusted her lot to the Parisian merchant Étienne Bourgey. Bourgey sold parts to the British Museum, the Cabinet des Médailles in Brussels and the American Numismatic Society (via the collector E. Newell). The BnF in Paris did not obtain any copies, but was offered by Bourgey a set of galvanoplasties reproducing nine medallions from the treasure (the three medallions in the Musée des Beaux-Arts in Arras and six medallions then in the possession of Étienne Bourgey). These copies are in gilded copper and numbered on the edge. The complete series sold for 1250 francs [https://antiquitebnf.hypotheses.org/16835#footnote_5_16835]. A few copies were dispersed in Belgium, notably by other workers. In 2020, after a number of scattered acquisitions, BnF Paris was able to acquire five medallions, classified as "national treasures", from Sabine Bourgey, granddaughter of the dealer Étienne Bourgey, with the help of the Banque de France (financing of €2.8 million).