I purchased a recent-vintage bottle of Mitsouko EDT in the refillable bottle...but I see that the current version looks quite different. Mine has a copyright date on the bottom of 1982 and can be seen on the left below:
The juice smells right and is properly labeled with a serial number, so I'm fairly confident that it's legit. (Also? Mitsouko EdT would not be a lucrative frag to counterfiet at any good quality...) I'm just curious as to when the bottle design changed for the refillable EDTs by Guerlain.....