I have two clear glass examples of very similar vases and both are Stourbridge pieces. If i had picked these two vases you have posted in local charity shops car boots or flea market's i would sell these on as Stourbridge pieces, thats the problem there is not much info on this type of glass, but this begs the question, why do these pieces turn up so often around where i live, why on earth would they be importing glass into one of the most prolific glass making area's in the world where millions of tons of the stuff was being exported every year? lovely vases by the way.