2007 20 Euro Silver Proof Kaiser Ferdinands Nordbahn Coin

Beautiful 2007 20 Euro Silver Proof coin for Emperor Ferdinands Northern Railway, uncirculated in original box with Certificate of Authencity. Obverse has steam locomotive 1837 with passenger wagons and lettering "REPUBLIK OSTERREICH 20 EURO 2007 TP DAMPFLOKOMOTIVE AUSTRIA 1837"; Reverse has people waving at passsenger train crossing a trestle and lettering "KAISER-FERDINANDS-NORDBAHN". All in perfect excellent condition; however, outside box wrapper has stains and wear (see pic's).