The hallmark of the assaying master of Penza - Bogomolov Fedor Yakovlevich - initials "F-B" - 1848-1851.

Bogomolov Fedor Yakovlevich, a certified master from Penza. The master's hallmark is divided into two cells by a line in the middle. In the upper part, there is an image of the initials "Ф" and "Б" with a current symbol between the letters. The lower part indicates the year "1850" (1848-1851). Shape: Rectangle.