Hi Beryl Welcome to posting. I would hazard a guess and say yours is genuine if the other one is genuine. It seems to me that many manufacturers did not mark all their moulds for the same item. Yours has that subtle glow under UV associated with the use of manganese decoloriser, which can be an indicator of first half 20th century or earlier production. And BTW, it's not pate de verre just bog standard frosted pressed glass, even though of good quality.