A romanticized print of Antonio Stradivari examining an instrument
<bdi><a href="https://en.wikipedia.org/wiki/en:Viktor_Bobrov_(painter)" class="extiw" title="w:en:Viktor Bobrov (painter)"><span title="painter (1842-1918)">Viktor Bobrov</span></a>
</bdi>
1860-1870
<a rel="nofollow" class="external text" href="https://books.google.com/books?id=bEsyAAAAMAAJ&amp;pg=PA173#v=onepage&amp;q&amp;f=false">Oberndorfer, Anne Faulkner (1921). <i>What we hear in music</i>. Camden, NJ: Educational dept., Victor talking machine company</a>