This is a set of two double-reed harmonicas (21-hole) from TOMBO, a long-established Japanese manufacturer. These are the classic "TOMBO BAND 21" model or similar, which produce a unique and beautiful tremolo effect by playing two reeds simultaneously from the upper and lower holes. • 1st: The cover is engraved with "TOMBO HARMONICA 21". • 2nd: Similar model, with faint or no engraving. • Case: The black hard case is marked with the key "A (A major)", and the old paper case is marked with the key "A MINOR (A minor)". It is likely that these were used as a set of major and minor keys. Recommended for both playing and collecting. 【Product Condition: B (Some signs of use)】 • Two harmonicas: The metal covers show overall scratches, clouding, and minor imperfections. There are no major rust spots or dents. • Black case: Shows signs of wear and tear due to age. • Paper case/Sheet music: Significant yellowing, stains, and folds due to age. The paper case is particularly damaged. • Operational check: Sound output has not been checked. Due to the nature of old products, the pitch cannot be guaranteed. Please consider this as a collector's item or for overhaul. 【Accessories】 • TOMBO HARMONICA 21 x 2 • TOMBO BAND 21 dedicated hard case (A marking) • TOMBO HARMONICA 21 paper case (A MINOR marking) • Baby Harmonica Songbook Box: 7 Tag number: 5231 Please check the condition in the photos. Please purchase only if you understand vintage and used items. #TOMBO #Tombomusicalinstruments #Harmonica #DoubleReedHarmonica #21Hole #Vintage #MusicalInstrument