Geometric Spirograph Design - 20 dirham

This specialized operational stamp is a definitive issue specifically designated for the collection of underpaid delivery fees (POSTAGE DUE). The clean, minimalist design relies on a precise, monochromatic blue spirograph or guilloché geometric pattern of overlapping wireframe ellipses rising across a plain, off-white background field. This abstract aesthetic carries a message of systemic accuracy, mathematical precision, and regular institutional order in fiscal administration.