NOS strings.. Have D'Addario Prism bass strings been discontinued? The Prism line of stainless steel bass strings was discontinued in 2004, and replaced by ProSteels line. ProSteels offer a brilliant high-end coupled with a deep low fundamental rarely found with stainless steel bass strings. If you liked Prisms, you will LOVE ProSteels. Check them out here: D'Addario Strings : Home Page These are sealed in their rust proof pouches. See pics for details. I have 5 sets. $17.00 a set shipped CONUS Thanks Talk Bass.