These memorial stones (so called Stolpersteine of stumbling blocks) commemorate:
Samuel Rosenberg (born 1871) 1942 deported to Thersienstadt en murdered there on 22.02.1943
Rosa Zilla Rosenberg (born 1879) 1941 deported to Kowno Fort IX and murdered there on 25.11.1941
"Stolpersteine" is an art project in Europe by Gunter Demnig to commemorate victims of National Socialism (Nazism).
The small copper plaques, in the pavement in front of houses of which the (mostly Jewish) residents were murdered by the Nazis, mention the name, date of birth and place (mostly a concentration camp) and date of death.
In many other cities, mainly in Germany but also in other European countries, the memorials also can be found. There are already many thousands of these plaques and their number is still counting. Almost all Stolpersteine are laid by the German artist himself, Gunter Demnig.
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