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Hello everyone. I'm new to autograph collecting and I'm about to send my first autograph request soon. I was wondering how much postage do I need? I am sending about a 5x7 inch envelope (will become the SASE), a 5x7 inch photo, and a letter all inside about a 6.5x9.5 inch envelope. How much postage is needed for each envelope?

Thanks for any replies!