Becker Albert O.  — The State Research Institute for Restoration, Artist-Restorer of the Department of Scientific Restoration of Metal Works
E-mail: 113metal@gmail.com

Dubrovin Mikhail F. — Ph.D., The State Research Institute for Restoration, Leading Researcher of the Department of Scientific Restoration of Metal Works
E-mail: 113metal@gmail.com

The article analyzes information from the main published materials on the topic under study: Postnikova-Loseva M. M., Platonova N. G., Ulyanova B. L. Gold and Silversmithing of the 15th – 20th Centuries (section “Index of Hallmarks on Items Made of Precious Metals”), Ivanov A. N. Assaying in Russia (1700–1946). A Guide for Art Experts; Kovarskaya S. Ya. Works of Moscow Masters of the First Half of the 19th Century. Catalogue of the Collection of the State Historical and Cultural Museum-Reserve “Moscow Kremlin”; address calendars “All Moscow” for the second half of the 19th century and the Database of The State Research Institute for Restoration the “Russian Hallmarks on Items of Decorative and Applied Art Made of Precious Metals” on the working period of Moscow assay offices 19th-century assay masters. A comparative analysis of information from various published sources revealed discrepancies regarding the working period of 19th-century Moscow assay masters, as well as the composition of assay offices during this period. For the first time, a comparative analysis of aggregated information from various sources, including address calendars and The State Research Institute for Restoration Database, was conducted. As a result of this comparative analysis, the timeframes of assay masters' work were clarified, confirmed by photographs of the hallmark impressions of these assay masters, as well as information from Address calendars. This article has scientific and practical value for both museum staff and specialists involved in the examination and attribution of decorative and applied art items made from precious metals. The information published in the article is useful both scientifically, by clarifying the working periods of assay masters and their composition, and for the practical introduction of previously unknown assay master stamps into scientific circulation.

Assay marks of Moscow in the 19th century, assay masters of Moscow in the 19th century, comparative analysis of the working periods of assay masters of Moscow in the 19th century, the State Research Institute for Restoration Database, unknown assay marks of the 19th century, unknown assay masters of Moscow in the 19th century, working periods of assay masters of Moscow in the 19th century.