Here is an absolutely perfect Fire King Sapphire Blue percolator top. Fire King produced Sapphire Blue from 1941 to 1956. The top is in unused condition with no chips, cracks, scratches or flea bites. The top measures 2 1/8" tall and 2 1/4" in diameter. The outside measurement of the section that actually sits inside the percolator is 2" in diameter. The top is marked "Fire King". It is pictured in "Anchor Hocking's Fire King & More" by Gene Florence.