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Not that I don't believe you my friend. I saw pictures of John Chapman wearing the Jacket and I know John and I both wear a 26" to 27" sleeve. Now a 46 with 23" sleeves would be for an extremely short armed man. Hang the Jacket on a chair and measure by letting the tape follow the natural outside curve of the arm from shoulder seam to the end of knit. If you don't come up with more than 23" I will owe you a drink.