This immaculate instrument is a rare thing, made in 1938. The Wheatstone company was simply the best at the time. The leather straps are original and as you can see by the photo, they are as new. Stainless steel reeds are the preferred material to give long life and a powerful tone. This is a duet McCann system 48 key which makes it even more rare. The regular Anglo player will run a mile, but for a new player that is not working in traditional circles, it would be a great thing to take up.
Being fully chromatic, any key is possible and chording too. Basically this McCann system runs from low to high left hand to right, the idea being you can accompany yourself a la piano style. It’s a great shame that the concertina was going out of style (after its 150 year reign) because some players would have taken this little jewel into all sorts of musical styles.