The identity of Arsen Maas remained unknown until 2014, when it was discovered to be an alias of Ante Masovčić, previously known for his theater-related work, and for being a subject of a well-known painting by Miroslav Kraljević.

Brcko, a provincial salesman (Arnošt Grund), comes to Zagreb and meets a diva from the operetta (Irma Polak).

[10] The identity of the film's director, credited as Arsen Maas, was accidentally discovered after being a mystery for almost a century.

[1] In 2014, Croatian film archivist and historian Daniel Rafaelić visited a retrospective exhibition of Miroslav Kraljević, held in Modern Gallery in Zagreb.

Under the painting titled Bonvivant – one of Kraljević's most important works – he noticed a legend which identified the subject as Ante Masovčić, also known under the alias of Arsen Mazoff.

Rafaelić immediately suspected that Masovčić and Maas are the same person, and subsequent research quickly found strong corroborating evidence.