see this item from Cairo, Egypt, 27.3.1917 to Switzerland. It bears a censor mark "PASSED CENSOR" (21x41mm, "PASSED CENSOR" 9x23mm) very similar to Firebrace CCC5. But there is no visible "A" or "B" below CENSOR, and Firebrace does not mention a version with "A" or "B". Is this is a known variant of this mark?
many thanks, Peter
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