| Product Description : Tesla Sodium Lamp SHC Holesovice Light Bulb Factory Advertising Pin Badge - A pretty Tesla advertising pin from the 1970's advertising flourescent tubes from this era, significant electrical engineering advances of the time. It is made from a silver coloured metal with coloured inserts and the badge face is 2.8cm wide and has a long, stick pin fastener to the rear.
Historic Background. Tesla 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.
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