Autograph lettercard signed, with an autogr. postscript by Sonja Liebknecht.
Berlin-Lichterfelde, 18 May 1913.
Oblong 8vo. 1 page.
€ 75,000.00
To the sister of leading Social Democrat Hugo Haase (1863-1919), sending wishes regarding the wedding ceremony of a member of her family: "[…] We are very pleased by the surprising news and congratulate you all, especially the bride and groom, with all our heart […]".
Sophia Borissowna Ryss, called Sonja (1884-1964), was from 1912 onwards the second wife of Karl Liebknecht.
Small traces of mounting on reverse; very rare.
