Released in North America the last week of February 2018 is "Green Siren 2018". 2011 started the "siren" Starbucks Cards and a number of them have been made since then. Starting with the green 40th Anniversary in 2011, the Silver 40th Anniversary , the Black Siren in 2014, the Just Siren (in the holiday 99 series), and the Ghost Starbucks Card early 2015, just to name of the few early ones - someone could make a collection on these alone.
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