1E7G NOS: most are in sealed boxes/cut open to test tube
1) Tungsol
1) Sylvania
1) raytheon
1) philco
 "Pin It")
&Category=&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_a1a86f43-9c9e-4a78-a23c-fe6194e873a7.jpg?v=1697990142){kind=link}