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NOS USAF Sperry flight control servo tube amplifier B52 ? 12AU7 6AG5WA 6AQ5:
$109.44
These are new old stock in the original military packaging. Some type of flight control servo amplifier made by Sperry. The end item usage isn\'t known.. they have 3 12 AU7 tubes and 6 each of the others. Pretty cool item might have some re-purposing use..
