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Hi, the material is lead, that was the common metal they used for these pilgrim badges. I found this specific badge in Germany near the city of Osnabrück.

Thanks for reading!

very cool, thanks

how did you find it?

Hi, with my metal detector. I pick either random locations with a nice scenery, or i choose locations where construction work is underway (trying to save it from being destroyed).

Thanks for reading :)

Peace.