As Slavic seems to be more closely related to Baltic than to any other branch of Indo-European, the one-time existence of a Balto-Slavic linguistic community has been advocated since the beginnings of comparative linguistics. Over the years, the proponents of the Balto-Slavic hypothesis have pointed out a series of common innovations, many of which belong to the field of accentology. A prime example is Winter’s law (Winter 1978), which is a comparatively late discovery that gradually gained acc…