Your coin is an alloy of 95% copper and 5% tin or zinc. Bronze is a similar medal with lower copper content (88%) alloyed with tin alone (12%). So, technically this not a bronze coin although it's common for collectors to refer to them as such.
Your 1946 cent is a common date, circulated coin that appears to have been cleaned. It's worth a few cents but no real numismatic premium.
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