Altocumulus Cloud Mugs

Description: US 37 cent postage stamp featuring dramatic red sunset sky with Altocumulus stratiformis clouds.

Description: Part of the Cloud Species Illustration Series, this design features a digital illustration of the Altocumulus stratiformis undulatus - one of the many unique cloud formations classified in the International Cloud Atlas. Each artwork captures the visual character and atmospheric texture of its respective cloud type, paired with its Latin name beneath for scientific precision and minimalist elegance. Perfect for meteorology enthusiasts, sky watchers, and lovers of natural forms.