Type 5687 vacuum tubes. One matched pair, circa 1950s, U.S.A made by Tung-Sol . Fantastic Tubes 🎷 🎶. Tubes feature black plates, copper gridsand top-mounted ‘Horse-Shoe’ shape getters construction.
Type 5687 vacuum tubes. One matched pair, circa 1950s, U.S.A made by Tung-Sol . Fantastic Tubes 🎷 🎶. Tubes feature black plates, copper gridsand top-mounted ‘Horse-Shoe’ shape getters construction.