So I just cracked this one. It's funny, from the outside it looked like the smudge was on the inside, but from the inside it appears to be on the outside. Its definitely not condensation as none of it is coming off despite all my efforts. The streakiness almost appears to micro-scratching of some sort, but that I still have no idea what the round blotches could be from....
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Items for sale or trade here UPDATED 3-16-18
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