Tube One: 124% (Tung-Sol stenciled on base with code 31; 56 on glass; bottom foil dimple D getter)
Tube Two: 105% (Majestic G-56 engraved on base; bottom foil saucer getter)
Tube Three: 99% (GE stenciled on base with code 49-F3; 56 on glass; bottom foil dimple D getter)
Tube Four: 69% (Super Silvertone stenciled on base with code 56X MR; 56 on glass; bottom foil dimple D getter; original retail label on glass)
Good range is between 70 - 130 (70% - 130%) on the Jackson 648 tester. Tubes are tight on bases.
I have a number of Type 56s in my store, including matched pairs, please view to see if any fit your equipment needs.
View the store for more varieties of tubes for your equipment.
Tube ships via United States Postal Service (USPS) First Class Mail with tracking for domestic U.S. sale; Priority Mail is an option. International orders ship via USPS First Class International Mail Package; tracking and insurance can only be provided if you purchase USPS Priority Mail International service.
Package weighs fourteen (14) ounces.
Combined shipping always welcomed.TRANSIT VIA POST CAN DAMAGE TUBES. THIS IS NO FAULT OF OURS BUT THE THIRD PARTY ENTITY THAT IS DELIVERING ITEM(S) TO YOU, I.E, USPS, UPS, FEDEX, YOUR NATIONAL CARRIER IF INTERNATIONAL, ETC. PLEASE INSURE THEM! WE CANNOT GUARANTEE FAILURES ON YOUR EQUIPMENT AFTER POWER UP AS THERE IS NO WAY TO ASCERTAIN HOW TUBES WILL INTERACT WITH YOUR ELECTRONICS; NOR IS THERE A WAY TO DETERMINE WHETHER THEY MAY HAVE FATAL FLAWS IN TUBES THEMSELVES! THESE ARE USED VACUUM TUBES AND TIME MAY HAVE TAKEN A TOLL ON THEM OVER THE MANY YEARS SINCE THEY WERE MANUFACTURED. WE CAN ONLY TEST FOR THE PARAMETERS MENTIONED ABOVE IN ONE OR MORE OF THE FOLLOWING EQUIPMENT WE USE FOR MEASURING: JACKSON 648, TY-7/U & MAXI MATCHER 2.