Page: 
Source: 
p. 2, b. 23-52
p. 1, b. 1-22
p. 2, b. 23-52
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AO - Autograph Oury
AR - Autograph Rotschild
AE - Autograph Eszterhazy
AK - Autograph Krudner
AG - Autograph Gavard
CX - Copy of Autograph Eszterhazy
CY - Copy of Autograph Gavard
CC - Czartoryscy copy
F - Fontana Version
FC - Fontana copy
PE - First Polish edition
FEF - Fontana's French edition
GEF - Fontana's German edition
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AO - Autograph Oury
AR - Autograph Rotschild
AE - Autograph Eszterhazy
AK - Autograph Krudner
AG - Autograph Gavard
CX - Copy of Autograph Eszterhazy
CY - Copy of Autograph Gavard
CC - Czartoryscy copy
F - Fontana Version
FC - Fontana copy
PE - First Polish edition
FEF - Fontana's French edition
GEF - Fontana's German edition
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  b. 29

The sources differ in:
- the rhythmic value of on the 1st beat in the L.H.: AO, AR, CX have a crotchet, CC and FC - a minim and AK, AG (→CY) and the editions - a dotted minim. Additionally, in AG there is a crotchet rest in the top voice. In AE, it seems that Chopin wrote a crotchet first and then, with an intention of prolonging it, he added a minim in front of it. In order to avoid crossing outs in the autograph, he preserved both values, which we transcribe as a two-part writing (the variant of CC features a simplified notation). There is an analogous situation in bar 21 in AE.
- the consonances on the 2nd and 3rd beats: AO, AR, AE (→CX) and CC have f-b fourths, AK and AG (→CY) - a-b seconds, whereas the F sources feature the f-b fourths with an added d1, for a full triad. 

Compare the passage in the sources»

category imprint: Differences between sources; Corrections & alterations

issues:

notation: Pitch

Missing markers on sources: PE, AR, AK, AE, AO, FEF, GEF, FC, CC, AG, CX, CY