Slave bell
The Slave Bell was used to punctuate the day at the Cape Colony during the days when slavery was still practised there. In Cuba the slave bell was rung before the slaves who had reported for duty were freed.
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Wikipedia
The Slave Bell was used to punctuate the day at the Cape Colony during the days when slavery was still practised there. In Cuba the slave bell was rung before the slaves who had reported for duty were freed.