Picked up a pair of NOS KT77's branded GEC with welded plates and star platforms? for the plates to sit on. They are in Heintz and Kaufman boxes. The tubes have short brown bases, KT77/YB Z in a box two getters and mirror tops. They also have the single letter Z on the glass, and made for CGE/PR on the glass as well. There is no hole in the pin guide, but they appear to be vintage Mullards.
Anyone know what the value of two NOS tubes like this would be?
Also picked up two NOS CGE 6BQ5's and CGE 6SN7GTB, two Phillips 12AU7A's which are Mullards (Blackburn code) and a 12AX7A made in Japan.
Anyone know what the value of two NOS tubes like this would be?
Also picked up two NOS CGE 6BQ5's and CGE 6SN7GTB, two Phillips 12AU7A's which are Mullards (Blackburn code) and a 12AX7A made in Japan.