Op. 2, Variations in B♭ major
Op. 10, 12 Etudes
Op. 11, Concerto in E minor
Op. 21, Concerto in F minor
Op. 22, Polonaise in E♭ major
Op. 24, 4 Mazurkas
Op. 25, 12 Etudes
Op. 26, 2 Polonaises
Op. 27, 2 Nocturnes
Op. 28, 24 Preludes
Op. 30, 4 Mazurkas
Op. 35, Sonata in B♭ minor
Op. 50, 3 Mazurkas
Op. 63, 3 Mazurkas
Op. 64, 3 Waltzes
Op. 25 No 6, Etude in G♯ minor
The cautionary 
before a
2 present in the sources does not seem to be necessary here. Similarly in the penultimate third in bar 58 and in the eleventh one in bar 59. In the entire progression, all a notes (in different octaves) are provided with sharps, which is really justified only in some of the places.
Compare the passage in the sources »
category imprint: Source & stylistic information
issues: Cautionary accidentals, Last key signature sign
notation: Pitch