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(!!!) UX-213 (sub for Type 80) Rectron Balloon 1920's used/60% thropiated tungsten filaments (38/40 and 38/40) (rare)
(!!!) UX-213 (sub for Type 80) Rectron Balloon 1920's used/60% thropiated tungsten filaments (38/40 and 38/40) (rare)
$ 99.99
UX-213 (sub for Type 80) Rectron Balloon 1920's used/60% thropiated tungsten filaments in white box
38/40
38/40
Tested on TV-7D/U
40=65%
See more: vacuum tube
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 UX-213 (sub for Type 80) Rectron Balloon 1920's used/60% thropiated tungsten filaments (38/40 and 38/40) (rare)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/6_b27ef872-8885-4f2f-b8c0-d03c8da10cb9.jpg?v=1784302335){kind=link}
 UX-213 (sub for Type 80) Rectron Balloon 1920's used/60% thropiated tungsten filaments (38/40 and 38/40) (rare) "Pin It")