Icky metal

Hi Jool Friends,

I recently purchased a large lot of vintage filigrees. A good part of
them look like they are plated in goldtone even though the lot was
sold to me as raw. The remaining look a whitish pink or black. What
can I do to clean these up? They are to go on our supply site The Jool
Pad, but I can’t see selling them in this condition, rare or not!

Thanks,
Holli
The Jool Pad
http://www.thejoolpad.com