matapan [2016-06-20 00:16:11 +0000 UTC]
According to the fan made Colonial Warriors Technical Manual, this symbol was used for the colony Tauron.
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Tinamn [2011-05-01 02:28:06 +0000 UTC]
Though not an exact match to the one in the BSG manual it's similar to the one for the colony of TAURA.