I have this pin available in a variety of colours. If you have a preference please let me know. A pretty Tesla advertising pin from the 1980's. It is made from a gold coloured metal and the badge face is 1.3cm high and has a long, stick pin fastener to the rear.
Historic Background.
Tesla Karlin in Prague was formed by Czech inventor Frantisek Krizik, (8 July 1847 – 22 January, 1941).
He was a Czech engineer, industrialist and inventor. His most famous invention was the self-regulating arc lamp but he also invented the light fountain, improved electric trams, and many other devices.
The tesla plants in Karlin were, during the latter part of the 20th century, principally involved in telephony, manufacturing millions of telephones (4 million alone were shipped to the Soviet Union) and manufacturing relay systems and engineering exchanges. The production plants were vast, but are now all derelict.