1959 zenith has no horz. hold?

[old_coot88]

Originally Posted by dieseljeep

...Every time I had problems with the horizontal hold and there was one used, that was the first item I replaced. It corrected the problem 90% of the time. I always carried them in my tube caddy.

Ditto here. But it was more like 99% of the time. And it was always a common cathode type. I honestly don't remember ever encountering or replacing a common-anode or series type, although the Boss kept all 3 types in stock, and in the caddy.