Finally getting around to posting some photos of an issued and a, very decent, copy.
First the original:
and the copy:
Details, first issued then copy:
The biggest differences are the thicker lining, label, tab to close collar, the fact that the former uses buttons to attach the fur collar while the other uses a zip, and the snap fasteners (which are bigger and brassy in the copy).
An interesting thread on the jacket (in French - google-translate is your friend) here: