Fentonglass Miniature Blackberry Compote in blue Carnival Glass. This delicate Fenton carnival glass piece is not stamped with the Fenton mark. Fenton Glass produced miniature blackberry in blue carnival glass per Fenton records from 1911 to 1913. This Fenton carnival glass piece has a lightly scalloped edge. The Fenton piece is 4 1/2" w x 21/2" h x 4 1/2" l