Looking for 10 philatelic articles of 500-700 words or more. I will also want short (2-4 sentences) summaries. These articles need to be one of a kind about stamp collecting. I am open on topics. These must be original articles and have never been published already. I will own exclusive rights to all articles once I pay you for them. You must have written articles before, and these must all be able to pass copyscape. I need to see samples!