Text on signs changes to unicode formats if a world is converted from 14w32d to 1.7.10
If you convert a world from at least 14w32d (most likely other snapshots too), special characters will become into unicode format on signs, and with "'s at the start and end of lines.
2014-08-08, 10:11 PM
2014-08-08, 10:16 PM
2014-08-08, 10:12 PM
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