Two imperforate stamp proofs for stamps

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The surprise for me in these two proof-sheets lies in the little note in the bottom corner: "Imprimerie des Timbres-Poste - France." Does France print Niger's stamps? These two proofs are as good a printing of the stamps as I have seen. Both stamps seem to include three colors, black, brown, and green. A strong brown foreground seems to stand against a sketchier green background.
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