Hi Rupert,
I need some Lange experts, I don't know much about Lange, this is not my watch, it belongs to a German friend who normaly only has genuine watches. I only borrowed the watch for some minutes as I never got to wear one before, I am having some doubts now! If it's a fake I need to tell my friend you will be disappointed having been cheated as I am pretty sure he doesn't know!!! Thanks for your help...Matt