Mullard 13GB5 XL500 Vacuum Tube NOS NIB September 09 2023 new in box US-made number

new in box US-made number / type 89 tubes tested to spec on our Paul Hart-calibrated TV7/U

ITEMS ARE GUARANTEED AS-DESCRIBED ON SHIPMENT

This matched pair of Sylvania gray glass 7C5 tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volt for shorts

new in box (for Tube One) matched pair of RCA 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U tester for shorts

OEM-BRANDED black glass 6K6GT tubes was tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts

Mullard 13GB5 XL500 Vacuum Tube NOS NIB September 09 2023 new in box US-made numberThis new old stock, new in box Mullard MANUFACTURED, Sylvania BRANDED 13GB5 XL500 tube tested to spec on our Paul Hart calibrated TV7 U WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY