> It is the unit that the tempo lever nests flush with the key slip
> front.  You tip one side of the long "oval" lever, and it extends
> up to be the tempo control lever.

Is the piano a Baldwin action?  If yes, I may have a part.  I parted
a Modello piano made by Baldwin and the Tempo lever sounds like it is
what you are looking for.  I will check in the next day or two to see
if I still have that part.

John Klungle