Bontempi was an Italian instrument manufacturer, founded in 1937. Their most notable product was a range of low-cost, plastic-cased reed organs which used an electric fan to produce the sound. 

The Bontempi B2 Air Organ is just one of the many models they put out, and really has a unique sound of its own. Very simple to use, and really fits somewhere between a kids toy and a serious piece of musical kit.

In contrast to the B1, functionality seems much the same, whereas the aesthetic presentation clearly differs. Most interestingly, this one has a wooden back with 'Made in Canada' stamped. 

These are battery powered, making them quite portable and fun to use. 

Hardware and electronics are fully functional. No box included.