PROTOTYPE Western Electric 726A Klystron Vacuum Tube PRE PRODUCTION MODEL LABEL

TESTED GOOD FOR CONTINUITY HAS LABEL ——-PRE PRODUCTION MODEL FOR LABORATORY AND EXPERIMENTAL PURPOSES ONLY

CAME FROM A LARGE COLLECTION OF NOS BOXED and some unboxed MILITARY TUBES and A large selection of foreign tubes. THE ONES I can test ON A REGULAR TUBE TESTER HAVE CHECKED OUT .

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