my thanks for your replies, and appreciate the etymology correction on 'gulvvase'. The base does show a reasonable amount of wear, so am thinking/hoping probably somewhere earlier in that time frame. I am led to beleive Keith that certain cased colour combinations do fetch substantial sums, although four hundred does sound a bit on the high side - maybe it was signed

. In fact I wouldn't go out of my way to pay big money for them - finding one unexpectedly for 'small beer' is much of the fun of glass collecting. Now, if I can just find a couple more in red and blue............

Anyway, these are definitely keepers. thanks again for your time.