Etched glass whisky bottle decanter with faceted stopper

Adorable glass carafe engraved with pretty patterns with its faceted stopper. Both elements have the number 56 hand-engraved (it is very discreet, almost invisible, on the base of the stopper and on the neck of the bottle), perhaps a mark of origin, or a collector who engraved this number on the two elements so as not to risk separating the lot. The set probably dates from the 60s or 70s. The set is in good condition, no cracks or chips, beautiful transparency (the photos do not do it justice) but a little reduced at the mouth of the bottle, inside, where the stopper rests. The bottle measures 18.5 cm in height, 22.5 cm with the stopper and approximately 9 cm in maximum diameter.