special DM90 (3426) which has the windows of SM90 on the AB-half of the 
trainset. The regular windows are criticised during summer because they only 
bring in little fresh air. Maybe this is an experiment to bring tropical 
temperatures down, or maybe NedTrain Zwolle (where DM90 maintanace takes place) 
was just out of DM90-windows...




Photo by M.Rörik (allmusicyouwant@hotmail.com)