Fotos of the marks/stamps would be beneficial.

Now we(mouse in my pocket) have always related Emil Eckoldt to Hugo Eckoldt, but sources in Suhl now give that they were not related as we had assumed. I will have to dig on that nugget of info.

So you have Emil Eckoldt's drilling & then the Kerner-Anson platform, which was the staple utilized by Suhl makers even up to recent times.

But for now, keep novel advances by Emil Eckoldt and Hugo Eckoldt separate.

Hochachtungsvoll,

Raimey
rse