
c. From 1870
Mark image
Source gives the 1870s to the early twentieth century; the end year is unspecified.
Pottery & porcelain · a closer look
Source dates this Sibfarfor mark to the late 1920s.
Sibfarfor Factory Irkutsk late 1920s mark

c. From 1870
Source gives the 1870s to the early twentieth century; the end year is unspecified.




c. 1920–1929
Source dates this Gosfabrika Sibfarfor mark to the late 1920s.
