Offered is a Sylvanian 5751 Twin Triode Tube. The tube is offered in its original carton. It tests good on the Jackson dynamic tester with no shorts or inter-element leakage. The readings are robust: 107% and 117% where the good range is from 70% to 130% on the tester. The tube has dark grey ribbed plates and a top getter with big giant supports on either side. The tube has a halo getter with excellent silver flashing. It is a 3-Mica type. Offered in original carton, dated Sept. 1964. These are desirable substitutes for the venerable 12AX7 twin triode in circuits where less gain is acceptable and lower noise is important.  Suitable for good music amps as well as Hi Fi in preamp circuitry. Pick up this twin triode for your own best gear. Mouse over the photo images to zoom in. NO RESERVE!! Thanks for looking.