Vtg 1960s 70s Scheurich Vase Black Lava Red Drip Glaze Model 205-32.

No chips or cracks. Please look closely at pictures. There are some faint white marks that can be seen upon close inspection. I thought these were hard water stains but I have been unable to remove them and I’m hesitant to persist in efforts to remove the marks.

Thank you for looking.