Sealed bearing specialized hubs from the 80s were made by Sanshin. Sanshin made the same hubs under their own name, as well as Suntour. I have owned all three, with the Sanshin labeled one being by far the rarest. Of these three brands, only Sanshin was a hub manufacturer. I am 100% sure Sanshin made them. Sanshin also used the house brand name Sunshine.
Specialized components from the 80's: hubs/Sanshin, cranks/Sugino, Stems-bars/Nitto, tires/????National?Panaracer?, rims-Saturae/???, frames/3Rensho-Miyata-Toyo-Giant later on-others.