Thalys PBKA set, seen on Thalys 9971 (Marne la Vallée-Chessy ---> Bruxelles Midi/Brussel Zuid), very shortly after crossing the French-Belgian border, which one can guess very close to the rear power-car...
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Esplechin-Wannehain (Frontière).
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6th May 2006. 
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P.L.Guillemin (plguillemin@yahoo.fr)