I stumbled upon this tea commercial on youtube and found it pretty interesting. It's part of a collection of some of the very first TV commercials ever. I'm not sure which brand they were advertising though. Maybe just tea in general? It says "Tea Council, Inc." at the end.
The linked video should start you at 6:05, which is right where the tea commercial starts. Here it is:
EDIT: I found the commercial by itself and says it's from 1956:
For general/other topics related to tea.