7687 SILVER PLATE
Top quality miniature glass triode pentode tubes designed for high fidelity audio applications. These fine 9 pin two section pre-amp tubes come with silver and gray plates and top halo getters. They are printed in yellow with Westinghouse logo WESTINGHOUSE MADE IN U.S.A. and glass etched 7687 U.S.A. Boxes are standard Westinghouse blue printed 7687.