that button is actually a bar or flat plate that slides
so it will play two different keys which is nice for stepping
Actually I knew it caused a mechanical part to move, but I didn't know what else to call it but a button.
I found it.
On the outside of the case, it says: Koch-Harmonica, CHROMATIC, Made in Germany
On the Harmonica itself, it says,
Made by M. HOHNER Germany
It's in "C"
I also have a little "Blues Harp" made by the same company.
Also in "C"
Did it ever get you any lovin' from the girls?