Calling card inscribed with the name "Professor Plattner" on small tablet set in landscape with view of foundry buildings, below crossed hammer and gad.

Calling Card

Possibly Lauchhammer foundry

1842/56

The name on the calling card refers to Carl Friedrich Plattner (1800-1858), professor of metallurgy at the Freiburg Mining Akademie from 1842 to 1856.