Roland,
If you compare the picture in Widfeldt's book from 1983 with the picture in Bookie's site you can clealy see the C+I marking in the later but that I after the + is missing in the photo in Widfeldt's book.
PM me if you want Bo's email if you want to ask him directley.
Here is a good site for WWII planes in Sweden during the war if you are interested;
http://www.forcedlandingcollection.se/indexe.html
Best Regards
Peter