Not my usual thing but these have been in a local charity shop for ages so I bought them. I thought they were paperweights/bud vases but having translated the label I see they are candles/oil lights. The identical labels, I think, say "Crystal candles, sodium/potassium glass 0% PbO (lead oxide)- Lead". Looking through the packaging I found the wicks and brass washers, unused. I would guess these are 1970's.