Good evening,
first of all, these parts are not mine and come from belgium.
personally, I do not practice excavation. all the more so as in my sector, it is totally illegal under penalty of heavy penalties with the authorities. ( Red zone)
all the parts belonging to me come from farms, salvage and sometimes from the internet.
I hope to have answered your question.
moreover, the soil of lorraine does not allow such conservation, and i would not take a crazy risk to illegally pick up pieces showing signs of steles.