Steinberger S100S Double Ball System Model Bass Guitar String Set, c. 1980's, made in New York. Vintage double ball system round wound Standard Light bass guitar strings. Made for Steinberger by E. & O. Mari/La Bella in Newburgh New York.
 
Height is 6 1/4 in. (15.9 cm.), 6 1/4 in. (15.9 cm.) width. New old stock. Still coiled unused in the package. Excellent Condition.