These are traces of fire clay brick of the kiln. It isn’t harmful. Just wipe it off or brush, should it visually disturb.
ANGEBOTE
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-25%New
10,00 €7,50 €Includes 19% MwSt. DEplus shippingDelivery Time: 1-3 workdays within Germany -
front entrance cave Ø 30 mm without defects triangular terracotta Bisher bei uns
4,80 €2,50 €Includes 19% MwSt. DE(0,50 € / 1 Stück)plus shipping -
-26%New
9,50 €7,00 €Includes 19% MwSt. DEplus shippingDelivery Time: 1-3 workdays within Germany -
-20%New
14,99 €12,00 €Includes 19% MwSt. DEplus shippingDelivery Time: not specified -
-17%New
28,99 €24,00 €Includes 19% MwSt. DEplus shippingDelivery Time: 1-3 workdays within Germany