Le trésor de Preuschdorf (Bas-Rhin) XVIIe siècle. Premiers résultats d’une étude pluridisciplinaire

Abstract

of a specific cleaning procedure preserving the silvered layer of the counterfeit coins. The analyses were adapted to the study of the official and counterfeit coinages. For the official coinage, the fineness was found to be between 12 and 40 % according to the mint place. These results are in agreement with the official values mentioned in the literature. For the counterfeit coins, the analyses were able to bring to light three different elaboration processes : amalgam with two various contents of mercury and leaf or electrochemical coating.

Ion Beam Analysis and 14C Accelerator Mass Spectroscopy to Identify Ancient and Recent Art Forgeries

“…However, the hoard of Preuschdorf, found in 2005, offered the opportunity to explore the production of counterfeit coins in the 16th century [15,16]. Among 7527 coins found, 38 counterfeit coins were identified (Table 1), imitating contemporaneous official issues (mainly Pfennige) produced in the Holy Roman Empire between 1535 and ~1620 (Figure 1).…”

X, UV et particules au service du Patrimoine Culturel

“…Saint Empire Germanique ont été trouvées, confirmant ainsi que l'Alsace était un carrefour commercial important avant la Guerre de Trente ans [6].…”

“…Dans le cadre des recherches autour du trésor de Preuschdorf, cité plus haut, plusieurs fausses monnaies ont été découvertes parmi les monnaies officielles [6]. Il s'agit de monnaies de cuivre recouvertes d'une fine pellicule d'argent (quelques micromètres d'épaisseur) fabriquées à la même époque, probablement dans des ateliers de faussaires.…”