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Monogram in the bottom right corner with the year.
Marius Johannes Janssen (The Hague July 4, 1885 – Rotterdam December 11, 1957).
Marius Janssen lived and worked in Rotterdam his entire life.
Marius Johannes Janssen, the stepfather of Marinus Johannes Dulman "the Younger", was a Dutch artist, and a well-known etcher in his time.
Janssens' etchings mainly have cityscapes as their subject, including Amsterdam, Rotterdam, Groningen, 's-Hertogenbosch, Dordrecht and Delft.
Many of his etchings concern churches and church towers.