Watch List notes:

GERMANY, Kaiserreich. temp. Wilhelm II. 1888-1918. Cast Æ Medal (63mm, 70.33 g). Die Bombe. By Ludwig Geis. Cast late 1914. Group of armored pikemen advancing left, being impacting by exploding spherical bomb go left; below, DIE BOMBE / Blank. Edge: C.POELLATH SCROBENH. Brown surfaces. EF.

The scene of medieval pikemen being killed by an exploding bomb can be taken as an allegory for the modern machine warfare of 1914.