"Firma Otto Helbing
Münzhandlung in München von ca. 1889 bis 1910." - https://ikmk.smb.museum/ndp/koerperschaft/5584, 13.12.2021
en
"Firma Otto Helbing
Münzhandlung in München von ca. 1889 bis 1910." - https://ikmk.smb.museum/ndp/koerperschaft/5584, 13.12.2021
(The left column lists the relations of this actor to objects in the right column. In the middle you find other actors in relation to the same objects.)