Medieval Old Helmet Mythological Face Helmet Battle-Ready Historical Treasure. This product data sheet was originally written in English. Below you can find an automatic translation into Spanish. The hull is made of 18 gauge steel. Finish: as shown in the picture. Diameter: front to back: 9 inches approx. Ear to Ear Diameter: Side to Side: 8 inches approx. Finish: As Pictured Circumference: 26 inches Diameter: Front to Back: 9 inches approx.