DF92/CV1758/1L4 Mullard /Mitcham factory,NOS

Early 60s

Matched quad,strong

Tested on Roetest V10  (4.5mA=100%)

All 4 tubes 5mA+

No shorts no gas

I will pack the tubes properly(in a wooden box), and will take great care in doing so

PRICE IS FOR 4 TUBES