Blenko Tangerine Ruffled Bowl Acid Etched Blown Glass MCM Vintage 11 inch. Beautiful piece in tangerine often referred to as amberina. This piece was in production beginning in 1958 and is catalog #3716. It has the acid etched Blenko mark on the bottom. Measures 11 inches long and is 5 1/4 inches tall. There are no chips or cracks.