The maker's mark is that of Thomas-Joseph Armand, together with his wife Jeanne Calliat. They specialized in ecclesiastical silver. They became masters of the goldsmith's guild in Lyon in 1854 and ceased business in 1901. Jeanne Calliat was the daughter of the well-known silversmith Francois Calliat. Her mother was from the Favier family of goldsmiths. Jeanne took over her father's company in 1851 and married Armand in 1854. During the second part of the 19th century the firm was one of the most well known manufacturers of ecclesiastical silver and their work can be seen in the Vatican and many other cathedral treasuries.