Free reed instrument

Pitch pipe, mouth blown free reed instrument. A circular brass disc incorporating chromatically pitched free reeds, from E4(?) to E5(?). The disc is enclosed in a plastic case, which is circular with convex sides and has thirteen mouth holes extending from around the rim. A circular laminated label on the front face has a logo with a stylised fenghuang (phoenix) at the centre surrounded by three concentric circles of lettering. The innermost reads: E.TOMBO.PITCH.INSTRUMENT; the middle gives the note names of the chromatic scale in capital letters with 'E' appearing twice. The outer ring gives numbers associated with each of the mouth holes and letter names. Number 1 corresponds to A and number 12 to G sharp. There are two '8's, to correspond to two 'E's. One '8' appears within a circle. The phoenix may be featured to indicate the connection of the instrument with the sho. Diameter: 73 mm, Depth: 15 mm. New and in good condition.