Looking for an old "The Time Machine" commercial

[Compyfox]

I'm looking for help on this one.


Years ago, I had a MP3 copy of an old radio commercial for "The Time Machine". Though I really don't know anymore if it was for a radio play (dated around 1948), or the first movie (BBC 1949 Teleplay or 1960's movie).


All I know is a phrase of the commercial, being like:
"...move at the speed of sound - the time machine!".

It did sound like a really old recording that could have been out of the BBC house, but I can't find any backups anymore.


So if there is anybody out there, that might know where this originated from, maybe even with full credits, I'd love to get a copy again. Thanks in advance.