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People have already identified the models but the Battlemaster, Pheonix Hawk and Marauder (metal minis) are all the "Unseen" variants which may make them worth a little more. Essentially FASA licenced existing anime designs for some of the original mechs and then found out the company that sold them the licence might not have had any right to do so. As a result they weren't allowed to use those designs anymore despite the mechs still technically existing in universe.http://www.sarna.net/wiki/Unseen