)==References====External links==*Druckmaschinen Datenbank Printing machines since 1900 – Summary of all offset and letterpress machines ever built, including Heidelberg models*Year of manufacture Tool for the calculation of the year of manufacture codes (1950–2004) for used Heidelberg printing machines.
* Официальный сайт компании* Druckmaschinen Datenbank Printing machines since 1900 – Summary of all offset and letterpress machines ever built, including Heidelberg models