Any Zenith parts distributor can order them for you.
Union Electronics, Tritronics inc. etc.
If I remember right, it was $149 authorized servicer price plus s&h, will
cost more if you are not an authorized Zenith servicer.

Do not forget there is Q5104 the G1 control on some of the Zenith Z line
that causes an exact symptom like a bad tube, the transistor will check good
on an elcheapo meter, but will be leaky in circuit.

David

Bob wrote in message
...
I'm trying to locate a US supplier of a color TV picture tube for a
Zenith 1997 TV. Model Z25A64W. The tube number is: A63AGD01X.

Thanks
Bob