I, too, just received a WRMI QSL from an email reception report nearly 6 months ago, this one of mushrooms. Of note, is a crimping embosser WRMI impression (like a notary would make) on the card. No postmark on this postcard sent on its own accord. The WRMI seal is only visible on the address side of the card where the writing is reversed. Impressive

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https://imgur.com/a/eKtk077. (Scroll for all three pictures)