Mark of an Unknown Moscow Master - Initials "I-P M" - 1776-1792

Hallmarks

Letter: I-P M
Year: 1776-1792
Shape: Three
Items: niello cup, cups, icon setting, State Historical Museum; niello cross, State Russian Museum. (1776-1792)
Description: Mark of an unknown master depicting the initials "I" and "P", with a dot between the letters, and the letter "M" below. Items: niello cup, cups, icon setting, State Historical Museum; niello cross, State Russian Museum. (1776-1792) Shape: Three conjoined circles