Antique Gold Filled Black Enamel Victorian Mourning Pin with Glass Center

The center of this enamel gold filled pin has what appears to be hair? In a small bundle preserved in a flat glass center. Photos are part of the description and show item quality, quantity and size. Straight pin and hook closure.

Glass in center does not have any cracks. Back has some "stains" where item was tested for purity of gold - this is gold filled not pure.

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