12AT7WC 6201 ECC801S NOS NIB JAN GE GENERAL ELECTRIC MATCHED PAIR TUBES 100% +
These 12AT7WC are "6201" Military tubes! 6201 = 12AT7-WC = ECC801S = E81CC = CV3508 = CV5212. It is often used for Hi-Fi applications. It provides very smooth mids and high end with a lot of detail.