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20 X U50/80 TUBE. NEW OLD STOCK IN ORIGINAL CARDBOARD ROLL.
BRAND: MARCONI. 1940s PRODUCTION
BLACK PLATES, DUAL GETTER (ONE ON TOP OF THE OTHER)
SOME LOGOS HAVE IMPERFECTIONS. SOME TUBES MAY HAVE SLIGHT VARIATIONS ON COLOR PLATE, SHAPE OR HEIGHT.
THE ROLL MAY BE DAMAGED DUE TO HANDLING TO TEST THE TUBE OR THE WEAR OF THE PAPER, IT HAS 70+ YEARS.
TESTED IN ROEHRENTEST TUBE TESTER