excellent pair ECC88,  Philips Amperex,  6DJ8, Bugle Boys

plant: Heerlen, in the very south of Holland, 1965

both tubes coded: GAA ∆5E2,,  triangle sign

normal ring getter, used, but testing NOS

see pics for test results:  19 / 17    and 16,5 / 15

tested  on AVO MKII tester , at Va =90 v, Vg= -1,2 V, 

and  Ia = 15 mA means new

ecc88 1965 pair DD