Acquired this today at my local car boot for £1 :hiclp: After scouring the net I managed to identify it as the Pineapple pattern produced by Sowerby. It has a high uranium content around the rim and also the base, not so much on the body. I never never knew that carnival glass pieces had this content before, have learned something new today. Is this quite common in carnival glass or might I have found a sought after piece?