Lovely pics Keith.
17cm is 6 3/4" (just wondering whether that is too big for a perfume and too small for a decanter... and does it look as though it might have had a stopper in it at some point? )
Is there a number engraved on the inside neck anywhere? (long shot).
It looks old to me - difficult to tell from pictures but the wear to the gilding and the colour/density of the white overlay makes me feel it's an old piece (yikes, could be wrong of course:) but I'd have bought it thinking that

)
m