Name Feodor Ruckert | ||
Feodor Ivanovich Rückert, Russian silver- and goldsmith of German origin, Fabergé workmaster. Born in Moscow in 1840. Worked with Carl Fabergé from 1887. His mark Ф.Р. (F.R. in Russian Cyrillic) can be found on cloisonné enamel objects made in Moscow, sold independently or by Fabergé.
References
Feodor Rückert Wikipedia(Text) CC BY-SA