Drama (Masque) Vase, Imperial

A squared-off vase about 8 1/2 inches tall. Two sides have a sort of devil's head with horns; the other two a floral design. Found mostly in marigold (Rubigold--1967-1972) and smoke (Peacock--1965-1972). Either of these colors sell on eBay for $20 to $30 but I've seen them sell for as little as $10 and as much as $50. Imperial also made them in ice blue (Azure Blue--1968-1973). One of these sold on eBay in 2004 for $15.