Chemical Composition: ICP-MS/AAA data from sample, Bronze:
Cu, 90.66; Sn, 7.86; Pb, 0.08; Zn, 0.012; Fe, 1.16; Ni, 0.02; Ag, 0.05; Sb, 0.03; As, 0.13; Bi, less than 0.025; Co, less than 0.005; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Chemical Composition: XRF data from Tracer
Alloy: Bronze
Alloying Elements: copper, tin
Other Elements: lead, iron, silver, antimony, arsenic
K. Eremin, January 2014
Chemical Composition: EMP analysis from sample, Bronze:
Cu, 90.07; Sn, 7.70; Pb, 0.07; Zn, 0.00; Fe, 1.21; Ni, 0.00; Ag, 0.04; Sb, 0.03; As, 0.04
M. McNamara, October 2000
Technical Observations: The patina is green with dark green and red on the interior. The lower edge is missing along most of the proper left side.
The helmet was raised from two sheets of bronze and joined with rivets along an overlap of 0.5 to 1.0 cm. Eighteen copper alloy rivets (c. 1.5 mm in diameter with 2 mm heads) were used; seven are modern replacements, but the rest are ancient. An x-radiograph of the helmet reveals numerous faint hammer marks (c. 1 to 1.5 cm in diameter) from the formation process. The thickness of the sheet is relatively uniform, ranging from 0.6 to 0.9 mm. An antique repair patch (1 x 2 cm) reinforces a crack along this join in the interior. Additionally, there are two or perhaps three additional rivets along this join at irregular locations compared to the evenly spaced rivets. One of these is intact and projects 7 mm on the exterior, probably to support decorative attachments. Four holes (1.5 to 2.5 mm) running roughly in line laterally across the top of the helmet may also have supported attachments. There is a 2.7-cm band of the surface across the area above the eyes that is better preserved than the rest of the helmet, and five rivets at this location may have held an attachment (1).
The incised decorations were made using a fine tracer. Repetitive impressions along the incised lines reveal that most or all were created with the same tool by means of angled blows of a hammer rather than having been punched in a vertical direction. The raised bands separating the incised decorations were created by working the interior using a repoussé technique. The inscription, which is more crudely formed, was made using punches held vertically, one c. 1.3 mm and the other 5 mm in length.
NOTES:
1. Compare H. D. Hoffmann and A. E. Raubitschek, Early Cretan Armorers (Mainz, 1972) 2-4, no. H1, pls. 1-5 and 7 (now in the Metropolitan Museum of Art, New York, inv. no. 1989.281.50), which has an additional decorative element riveted to the visor section.
Henry Lie (submitted 1998)