I saw this Setra S431DT at Südtiroler Platz in Wien.
It has a fleet number in white on the front and the last 3 numbers are 416. Plate W6304MW was on a Blaguss S419UL which has a red fleet number.
Is this a Blaguss bus?
Regards
Michael Taylor
Binbrook, Ontario
http://www.michaeltaylor.ca