Thanks Robbo. My 'stella polaris' had R1 clearly impressed on the base. I'm 99% certain it was an Italian copy. As Ivo pointed out, the plastic covered stopper didn't seem right, and the design wasn't crisp enough somehow.
About the Emma decanters...I'm still not sure about them. Someone here should offer to buy one in the name of research and compare a vase to it... :wink: