Dating
1915-1916
Obverse
HURRA GERMANIA / BRITANNIA RULE THE WAVES / EW, large sea monster, Britannia, attacking nude Siegfried carrying shield and sword; artist's cipher; within a pellet ring; outside, wave design and legend
Reverse
SIR / WINSTON · CHURCHILL / DEM · SEEGEWALTIGEN / W · EBERBACH, U-boat underway to right, (unusually) with dot over "I" in "SIR"; within a pellet ring; outside, wave design and legend