Working from secondary sources

From the TC 372 Workshop Compendium

The EN 15907 schema was designed to accomodate more detail than what is commonly found in a single filmography. This makes it suitable for compiling information found in scattered sources, i.e. for aggregating metadata at the level of individual cinematographic works.

From: http://web.nfa.cz/CeskyHranyFilm/cz/obsah/filmy/72540.html

Here is a snippet from a record found in the Catalogue of Czech Feature Films 1898-1970 (Katalog Český hraný film 1898-1970). Other sources say that Pancéřové auto was a Czech-German co-production, also known as Das Panzerauto. Eine Geschichte mit Hindernissen.