The catalog number YRS-24B indicates that the instrument is a soprano. The fingering chart most likely shows fingerings for both soprano/tenor and sopranino/alto. The lowest note for the soprano and tenor fingerings will be C (one ledger line below the staff). The lowest note for the sopranino and alto fingerings will be F (first/lowest space on the staff). Since your instrument is a soprano, learn the C fingerings. Good luck and have fun. –Dick–
