Seydel’s Saxony harmonica was the first commercial non-customized chromatic harmonica with stainless steel reeds. It was introduced at the beginning of 2009 at the music fair in Frankfurt. It was also the first 3 octave chromatic with an aluminum comb.
In 2017, 9 years after the Saxony, Seydel introduced a 4 octave instrument with stainless steel reeds and aluminum comb called Symphony Grand chromatic.
Chromatic Harmonica History 
Excelent perfect inovation! Great Thank you very much.
Giuseppe
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