How do I clean a very old, solid brass lamp that is absolutely filthy?

There are so many different opinions on the net! I wondered if any of our trusted talkers have done this and with what result? The lamp is actually a standing chandelier and is very intricate. Also, does anyone have an idea of value? Of course this is one of my CL finds.

Watch the dirty melt away from this light switch cover and wall #satisfying #cleaning #cleaningmotivation

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