You often see Nichikan NO.2 trumpets on auctions and flea markets, but in their original state, they are trumpets that lack the functionality to be used in a band ensemble. They are particularly problematic for beginners and are not recommended for practice. The reason is that they do not have any features to correct intonation during performance. Due to the structure of the trumpet, Low C♯ and D tend to be sharp, and it is necessary to pull the slides while playing to correct the intonation. Trumpets without this intonation correction function are useless in modern times. Also, because they were mass-produced as a common product, they have no value as a vintage instrument. Our workshop has upgraded this NO.2 to implement the specifications of the NO.3O, which has been modified to allow professional players (mainly in the Self-Defense Forces, police, and fire department music bands) to play without problems, and has incorporated more modern elements. Through rebuilding, we have enabled the operation of the 1st and 3rd slides, customized it so that it can be used without hesitation in band ensembles, and implemented all modern specifications. The reason for customizing the NO.2 is that it is a piston valve trumpet with an MS bore (narrow bore), which is not currently sold in commercial instruments. MS bore trumpets are also available in rotary valve trumpets. After all, the fanfare-like sound is unique to the narrow bore. It is easy to produce a sound that stands out in a big band. Compared to modern YAMAHA instruments, it has a unique playing feel, but you can enjoy the rare sound of the MS bore. It requires a certain amount of playing experience to play. Players with little experience should choose a general ML bore trumpet. Also, it requires the skill to handle vintage instruments. ★Please see the second photo for the customization details. ★Contents of the listing ・Nichikan NO.2A (manufactured in 1966) Body ★Condition ・Approximately 70% of the lacquer remains. ・Noticeable dents have been repaired. ・Slides and piston valves are airtight, and the operating system has been adjusted.