Lene, My vote is for Pinocchio - depending on which for of parent is used, you can get flowers with purple or without...
I find this site really, really helpful:
slipperorchids.info
If you look under 'primary hybrids' and search for Pinocchio, you can see one that I think looks like your's:
http://www.slipperorchids.info/paphp...Pinocchio3.jpg
Edit to add: Avalon Mist is also similar, but the only reason I didn't go for that one was that it is a sequential multifloral, and it looks like Lene has multiple flowers open at the same time.
Hope this helps!