[Alan Brinton]

Thanks for that information, Bruno. I’m especially interested because I have since acquired a second Professional 36, in better condition, and of the third type. It has the trumpet mouthpiece, the plastic mouthpiece receptacle, and a hexagonal brass screw cap. Although the sound is lovely, I am not playing it much because of the amount of wind it requires, even though it is relatively air tight for this type of vintage Hohner.

I have still not followed through on the other one, despite good intentions.