This article examines illustrations of the zodiac signs on birth amulets from German-Jewish printing houses from the 18th century. These woodcuts are part of a long tradition of astrological references in Jewish art and literature. However, the amulet texts themselves do not contain any astrological topics. What, then, is the relationship of the woodcuts to the text and to the function of the amulets? By contextualizing the images with other contemporary traditions of illustration, this article provides three interpretation models which can explain the choice of the zodiac signs on the amulets.