Among the hundreds of items recently added to PostBeeld’s vast stock is a large quantity of WWF stamps, some of which are shown in this article, beginning with this minisheet from Niue featuring spectacularly colourful Nudibranchia (commonly known as sea slugs).
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The thematic collector of mushroom/fungi stamps has an amazing choice of stamps to seek out. It is thought that there are around 10,000 known varieties of mushrooms, with experts predicting possibly thousands more undetected. Here are some fine examples of mushroom stamps:
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