Esperanto symbols, primarily the Esperanto flag, have seen much consistency over the time of Esperanto's existence, though a few variations in exact flag patterning and symbology exist.
Esperanto flags prominently displaying the Verda Stelo in Rotterdam, the Netherlands
L. L. Zamenhof was the creator of Esperanto, the most widely used constructed international auxiliary language.
Zamenhof, c. 1895
Birth register
Families Zamenhof and Alfred Michaux [fr] at the first Esperanto Congress, Boulogne 1905
Zamenhof, c. 1879