Bamberg Cathedral medal identification

I would like to get any info about this medal. I bought it without any information, and I want to add it on the numista catalogue, so any help would be useful. Weight is 38 gramm

I can only give you the text:
‘H(ei)l(iger) Heinrich Gründer des Bistums Bamberg’ - Saint Henry, founder of the diocese of Bamberg

[Umlaut Ü is missing on the medal]

Heinrich II of the Holy Roman Empire on the one side and ‘Dom zu Bamberg’ - Bamberg Cathedral on the other.

Thank You