|
Likely its been there the whole time and you are just now noticing it. Phosphor just doesnt fall off the screen. The conditions inside the tube have been the same for over 60 years. The only real way it will get bigger is if the tube is under heavy vibration or shock.
It's nothing to worry about.
__________________
Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)
|