Accordion consists of two parts - the melody and the bass sides connected by bellows. The sides are wooden and finished with glossy black plastic. The fingerboard with the placed on it royal piano-type keyboard with thirty-nine plastic keys is the prolongation of the melody side. White keys of five treble couplers, corresponding the notes’ combination are depicted on them. The keys are rimmed with black onlay. The melody side external surface is in in the form of a grid with ornately shaped cells, closed with fabric.

The grid is decorated with white onlay panels and inscription – the firm title “Hagstrom”. Vertical panel with the instrument model name “Estrella” closes the front surface. The melody end and fingerboard rear side are closed with cardboard panel clued with grey synthetic material. The panel is fixed with screws. Metal brackets are screwed up to the sides’ upper and lower surfaces. Leather shoulder straps with white plastic lining are attached to the brackets.

Keyboard strip of white color with ninety-six white and black buttons is on the bass side front surface. White buttons are arranged in zigzag line. The hand strap covers the side lateral surface. Knurled nut is located in the slot in the bass side upper surface; it allows adjusting the belt length. Two metal keys of the bass coupler are between the keyboard panel and bellows. Sound bars with slotted vocal reeds, soundboards and keyboard valves are inside the melody and bass sides. The bellows’ folds inner surface is clued with red cloth, ends are clued with black and white leather and the edges are strengthened with metal brackets.

When the instrument is lead off, the bellows are totally compressed and two metal frames with buttons hold both sides together. Additional buttons fix the frames while the instrument is playing. The accordion musical range extends from small octave S to A on the third one.

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