The Tesla stamp is from an electronics company founded in Czechoslovakia in 1921. The stamp says “ the mark of world class”
1926
Bratislava 1926
Slovakia 1926 Round
1940
Slovakia 1940 Blue
Slovakia 1940 Red
Slovakia Blue
Slovakia Red
1950
Tesla Cinderella Unknown
1999
Jewish Museum Slovakia 1
Jewish Museum Slovakia 2
2014
Levice Synagogue
2017
Slovakia 2017 Heart