2 films in the catalogue, 1919 to 1921. Each mark is one film. The white bar runs from the first to the last.
From Wikipedia
Bert Sprotte (9 December 1870 – 30 December 1949) was a
German actor. He appeared in 77 films between 1918 and 1938.
He was born in Chemnitz, Saxony and died in Los Angeles,
California.