Trion Dampf Mühlen Seal, Image & Found by, Image & Found by BobHoe.
From Kexby.
Possibly DampfMühlen second line down. TRION ? above it and JCTIER ? below - bottom line totally illegible. Letter F on domed reverse where number usually resides - see CONCORDIA seal. Likely to be a flour bag seal possibly milled in Hungary.