Forgot to add yesterday that if you (or anyone) are considering getting an Italian organetto (one and a half row, two bass) the air button is usually in a very awkward position and takes quite a lot of getting used to. (My theory is that the this box developed so that the bellows movements were smoothed out so much by the extra half row the air button is only used to open or close the bellows to start or end a tune - the smallest versions might not even have an air button )

An example:

http://www.youtube.com/watch?v=ODvZea-iyVY

http://www.youtube.com/results?search_type=search_videos&search_query=organetto&search_sort=video_date_uploaded&search_category=0