NOS in original boxes. All of these are relabeled as various American and European brands including Dumont, Triad, International, Lindal, Ultron, National, etc. Various countries of origin markings including "England" to "trick" import officials during the trade embargo with Russia during the cold war. Due to limited stock, pairs will likely contain 2 different brands though all the tubes are identical. Don't wait to order, supply is limited,