<p>Type 6P1P miniature 9-pin beam tetrode vacuum tube manufactured in former Soviet Union circa 1980s. 
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The anode and the beam forming plates have been removed. The screen grid and its support rods are now fully exposed. The control grid and its support rods are inside of the screen grid. In the center is the cathode.
<a href="//commons.wikimedia.org/wiki/User:Mister_rf" title="User:Mister rf">Mister rf</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>