Those are some nice hooters there Melodion me.
Below is my new to me Melodion M-36. You can definitely see the hohner piano 36 reference to this melodion when you play and handle it. Quite characterful in sound and tone with a very sturdy build quality. Somebody jammed the piece that feeds to the tube style mouthpiece in so tight it created hairline cracks in the plastic but I got it out with a little patient wiggling. Have not been able to play it much at work but what I can say is this is one loud little hooter. Full review to come.