Crown Prince Rudolf of Austria (1858-1889). Photo taken 1880, at the time of his engagement to Princess Stéphanie of Belgium (they married May 10, 1881).
<bdi><a href="https://fr.wikipedia.org/wiki/Jules_G%C3%A9ruzet" class="extiw" title="fr:Jules Géruzet">Géruzet Frères</a>
</bdi>
1880-03
Marie Louise, Countess Larisch von Wallersee-Wittelsbach, <i>Secrets of a Royal House</i>. John Long, Ltd., London 1936, p28