Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Vintage Goran Warff Kosta Round Art Glass Single Flower Vase/Oil Lamp $49.00 Vintage Goran Warff Kosta Round Art Glass Single Flower Vase/Oil Lamp. 4” tall. Add To Cart Added! Vintage Goran Warff Kosta Round Art Glass Single Flower Vase/Oil Lamp. 4” tall.