4 RCA 50Y6 Vacuum Tubes Valves NOS NIB Lot Of Four 12JT6 Compactron " They have black and

" They have black and silver glass

old-fashioned Coke bottle

great flashing and 63-48 188-5 and 64-13 188-5 factory/date codes

new in box National Union 25Z5 tubes tested to spec on our Paul Hart-calibrated TV7/U

There are eleven new old stock

4 RCA 50Y6 Vacuum Tubes Valves NOS NIB Lot Of Four 12JT6 Compactron " They have black andThis lot of four RCA 50Y6 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 UP TO $250 IN VALUE. IF AN