I have a 7 hole recorder, about the side of a sopranino.
On the front it says: “Johannes Adler Markneukirchen”.
Markneukirchen is a German town famed for instrument making, especially recorders, and Johannes Adler is a company. I can’t find any reference to a 7 hole recorder anywhere online, and noone I know has seen a 7 hole recorder before. Please help!