5 Sylvania 50Y6 50Y6GT Vacuum Tubes NOS NIB Lot Of Five Quintet August 23 2023

5 Sylvania 50Y6 50Y6GT Vacuum Tubes NOS NIB Lot Of Five Quintet August 23 2023These five new old stock, new in box Sylvania 50Y6GT tubes 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 PURCHASE PROTECTION COVERS ITEMS

new in box GE 6EM5 tube tested to spec on our Paul Hart-calibrated TV7/U

This lot of two (one 12K7G and one 12K7GT) National Union 12K7 tubes tested to spec on our Paul Hart-calibrated TV7/U

respectively where minimum (65%) is 57/57 and 100% is 88/88

32 and 47 where minimum (65%) is 25

Or maybe not

They have 4-39 188-5 and 3-43 188-5 date codes/EIA code

but I would step it up to an 8 or so as this sound striping recording is truly cutting edge

These tubes have gray coated bottles

winged plates with one rectangular hole per plate

where minimum (65%) is 25/25 and 100% is 38

54 and 66 where minimum (65%) is 42

new in box industrial-grade GE 6679 / 12AT7 dual triode was tested on my Hickok 600A for shorts