Sergey
== Description == ''Introduzione'', scene 2 (top row, middle) of Wilhelm Busch's ''Der Virtuos'', ''Münchener Bilderbogen'', No. 465, published by Braun & Schneider, Munich. The pianist and his listener, the poses, hats, music, piano, chairs and line drawing correspond to HPB-SB-10-8, image item 1. This is an uncoloured impression photographed in its natural paper colour. The album has applied figure colours; this source does not. It is a matching historical printed witness, not proof th...