Handmade 10-hole diatonic harmonica in the key of D major that is known as the original blues harmonica and historically as the world's most popular harmonica. Its uniquely authentic sound has defined the role of the harmonica in the blues tradition and made it the benchmark instrument by which all others are judged. Its pear-wood comb with single layer of lacquer, arched stainless steel covers with side vents and traditional HOHNER tuning are combined to create the legendary sound which can be heard on countless classic blues recordings from the 1920s to the present day. The harmonica features 20 classic reeds and 0.9 brass reed plates mounted with nails.