Sibling to 585: two broad rim lobes fold outward like petals with a deep V notch parting them at the front; the charcoal interior mottles silvery-gray across the folds. The underside spirals wet-looking black ridges around a matte bare foot patch, 586 incised.
What parts the petals? A deep V cut of a notch — two lobes leaning away from each other, formed and left. Piece 586 of 10,000, listed at $5.86.
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