Skylight help please, Germany or Norway?
 

Hi all

My Merc van was fitted out for the Norwegian police as a control centre for the winter olympics in Lillehammer 1994.

One of the skylights blew open and broke on a windy day. I cannot find anything to fit from standard manufacturers. There is nothing on the perspex or frame to indicate who made it, dimensions are 54x47cm outside edge, 50x43 cutout size. Anyone recognise it?
Thanks
Bruce