Fine European made EL84 6BQ5, made by RFT in East Germany back in 80s
Without boxes, but tubes and printing on tubes are perfect! I’ve seen these tubes under a lot of various logos like Siemens, Telefunken, Haltron . . . I suppose that these tubes are from beggining of 80s, ring getter, stapled plates in three spots, three slots on plates.
Click to see all EL84 6BQ5 Output pentodes in stock