Investigating five totalizing counters manufactured by the Alphonse Darras company of the CNAM collections in Paris

The paper reports the study of five totalizing counters preserved in the collections of the CNAM (museum of the French National Conservatory of Arts and Crafts) in Paris. These artefacts are part of a corpus of over forty counters attributed to the Darras company founded by engineer Alphonse Darras (1860-1936). In the framework of the LacCA project at Haute Ecole Arc, Neuchâtel (Switzerland), dedicated to the characterization of lacquered copper-alloys, our attention was drawn to the different aspects of the object’s coatings. Lacquers were frequently applied to technical objects to both protect them from corrosion and provide an esthetical appearance. Five totalizing counters showing various typologies and surface colours were chosen from the set and explored by a non-invasive multi analytical approach. The comparative study – investigating lacquering processes and materials - contributes to the historical study of these artefacts.