Hi i purchased this alsterfors vase today it has the small buff seal near the base which says this! i also purchased 2 blue and 2 yellow glasses as in photo as they were next to the vase in a charity shop im unsure as to there origin each is a slightly different shade of blue or yellow also they are white cased on the inside like the vase so i took a chance on them as they were 20p each are they alsterfors??