12BH7A Sylvania Matched Pair NOS Testing Gray Rib Plates Top Halo Getter Amplitrex Tested

This new old stock-testing electrically Matched Pair Sylvania 12BH7A Tubes with gray ribbed plates, top halo getter and silver tops were tested on our Amplitrex.

Tube One: 12.6 / 12 (Sylvania, logo and 12BH7A on glass; with codes kd JBD)

Tube Two: 11.4 / 11.2 (Sylvania, logo and 12BH7A on glass; with codes cd JHL)

Spec (100%) is 11.5 on the Amplitrex. Tube One tests: 109% / 104%; Tube Two: 99% / 97%.

Pair have gray ribbed plates (Tube Two's plates are bigger than Tube One's), a top halo getter with silver tops. This pair tests very strong. Tube Two comes with its original Sylvania box. I will let the buyer clean the tubes as I don't want to smudge off any of the lettering.

Shipping is First Class with tracking in the United States.  International sales via USPS First Class International Mail/Package.  International buyers wishing tracking and insurance must purchase USPS Priority Mail International.  Package weighs eight (8) ounces.

Combined shipping welcome.

TUBES ARE GUARANTEED GOOD AND IN WORKING ORDER AT SHIPMENT. 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: TV-7/U, MAXI MATCHER 2, AMPLITREX & JACKSON 648.