Autographed partiture by the Polish composer Frédéric Chopin of his Polonaise Op. 53 in A flat major for piano, 1842.
<bdi><a href="https://en.wikipedia.org/wiki/en:Fr%C3%A9d%C3%A9ric_Chopin" class="extiw" title="w:en:Frédéric Chopin"><span title="Polish composer and pianist">Frédéric Chopin</span></a>
</bdi>
1842
Heineman Music Collection (Unbound), Pierpont Morgan Library Dept. of Music Manuscripts and Books