Rudolph Koch (the northern influence)

Rudolph Koch was for most of his career the staff designer at the Klingspor type foundry in Offenbach. Early work by Peter Behrens and Otto Eckmann showed a clear Jugendstil culture upon which he built, designing revised blackletter faces. He combined the talents of punch cutter and calligrapher, two skills sometimes at odds with each other (above Koch various specimens).

Some of Koch well known fonts.

Here a list of Koch's "Christian symbols."