Rare participant's badge of the 5th Congress of Polish Technicians, held in Lwów from 8 to 11 September 1910. The congress was one of the most important scientific and technical gatherings in the Polish lands under the partitions, bringing together engineers, architects, builders, mechanical engineers, and industrial specialists from all three partitioned territories. The sessions focused on the development of technology, transportation, civil engineering, industry, power engineering, and technical education.
The programme included plenary sessions and meetings of numerous specialist sections, while the congress was accompanied by the First Architectural Exhibition in Lwów, showcasing the latest achievements in Polish architecture and engineering. The congress played a significant role in uniting the Polish technical community and in formulating common approaches to the development of industry and technical education, becoming one of the most important technical congresses held before Poland regained its independence.
C-clasp fastening.
Badge from the Collection of Lech Kokociński, Honorary President of the Polish Numismatic Society.



