Claude
The cachet features a detailed teal/turquoise engraving-style illustration of a large mineral rock formation with a miner or figure visible at the top, with green mineral deposits (suggesting malachite) visible at the base. The word 'MINERALS' is printed vertically in large bold teal letters on the left. Explanatory text describes azurite as a commercial source of copper often found with malachite. The 29-cent Azurite stamp from the 1992 Minerals series depicts a vivid blue botryoidal azurite specimen on a gray-green background. The circular hand-applied postmark reads Washington, DC, Sep 17, 1992, ZIP 20066.
Mistral
This First Day Cover features a vivid blue 29-cent Azurite stamp from the 1992 Minerals series, depicting a botryoidal azurite specimen. The cachet artwork by GAMM showcases an engraving-style illustration of a mineral rock formation with green malachite deposits, along with informative text about azurite. The postmark is a circular cancellation from Washington, DC, dated September 17, 1992. The cover is in excellent condition with clear and legible details.
(The automatic summaries sometimes misidentify the postmark as part of the cachet artwork.)
