I've seen only one of those myself, it being from E3 2014 is true.
I've also seen a few Bungie Emblems (the first with the lightning bolt), like Shield of Heroes, Shield of Legends
Then I saw [i]one[/i] emblem, one time that was a black bow and arrow on a dark green back ground. The guy never told me where he got it, though.
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those bungie emblems are for years spent on the forums