Robert Oster Plumb Nut Ink Sample (3ml Vial)
A 3ml sample of Robert Oster Signature Plumb Nut fountain pen ink, labeled with the name of the ink brand and color, in a plastic ink sample vial with a dip at the bottom to allow you to easily get every drop. Robert Oster Signature Plumb Nut fountain pen ink is a deep, muted shade of purple.
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Volume - 3ml Vial Material - Plastic Color Group - Purple