On 12th October 2005 a Thalys was used to transport the Maastricht 'Thalys lobby' (the city wants to be included in the Thalys network) to Den Haag and back.
The picture shows the 4538 as (extra) train 9202 (Den Haag Centraal - Maastricht).
Delft Zuid, Wednesday 12th October 2005. 

Photo by Rogier Peeters (R.Peeters@student.tudelft.nl)