2 Sylvania 5899 JHS-5899 Vacuum Tubes Milspec NOS NIB Lot Of Two 2nd Quarter BW23 but the spine is in

but the spine is in fine shape with no loose pages

(New 6CG7s typically test from within a half standard deviation of 2600)

These seven new old stock

I have played them in my Musical Paradise 301 MK 3 with adapters (not included) as 6SJ7 substitutes and they sound excellent -- airy with excellent dynamics and signal bandwidth

new in box GE 6J6 / 6J6A tubes tested to spec on our Paul Hart-calibrated TV7/U

2 Sylvania 5899 JHS-5899 Vacuum Tubes Milspec NOS NIB Lot Of Two 2nd Quarter BW23 but the spine is inThere are two new old stock, new in box milspec Sylvania JHS 5977 tubes in this lot. 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 UP TO $250 IN VALUE. IF