Thank you for viewing our products. This listing is for two 12G-B7 vacuum tubes from Mitsubishi Electric Corporation (used/with original box). Although they are old, the body, markings, and pins are all in a clean condition. Please check the photos for the condition. Only the heater continuity has been confirmed, and specifications have not been checked. Also, recent operation in an actual device has not been confirmed. Please consider purchasing with the understanding that this is a used, junk item and is non-returnable and non-refundable. (Compact) #vacuumtube #vacuumtubeamp #amp #vacuumtube12GB7 #12GB7 #MitsubishiElectric #HiFi #highfidelity #Fuku'sVacuumTubes #GTtube #MitsubishiElectricCorporation #MitsubishiVacuumTube