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Here in Italy we had DC power as well as 42, 50 and 60 Hz AC power (depending on the local powerhouse) @ 48, 110, 160 and 220 volts
As a result, older radios and TVs (and even washing machines and so on) are usually fitted with voltage selectors.
In the mid 60s a national power grid was finally built and 220v 50Hz was chosen as the nationwide standard.
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