Found by @twitaculous

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Out today, Visions of the #Universe stamps. In what year was the Royal Astronomical Society founded? Reply for a chance to WIN* *To enter: follow @RoyalMailStamps & reply with the ans before 23:59 16 Feb. UK resident, 18+ only. 3 prizes. Full Ts&Cs apply: https://t.co/IUH5iQjy1Z https://t.co/APLbfrX5eM


Sometimes promoters tweet more than once.
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