This is for a quad of 1955 Sylvania green print, black short plate 12AU7A tubes. Tested on calibrated Hickok 6000 tester at 2300/2150; 2100/1800; 2100/2250; 2000/2150, where 2200/2200 is new/nominal on this tester. Nice quad. Just $35.00 including shipping.
