unknown( perhaps Alsterfors?)

Blueish/green bowl on a open clear rectangular foot it is 17.5 cm high the bowl has is 18.5 cm in diameter and the clear foot 8.5 cm. I thought perhaps its the bowl from the Alsterfors ad ( it is the same color as the large vases from the ad) but cant really see the shape of the bowl and the connection of the foot to the bowl and dont know the size of the bowl from the ad

its a beautiful bowl but would like to know by who

thanks