Reconstructed design 1 from the Sutton Hoo helmet, incorporating portions known from fragments as well as conjectural portions.
Own work
This file was derived from: Sutton Hoo helmet fig4.svg
Information from:

1978 - The Sutton Hoo Ship-Burial, vol. 2 - Ch. 3 - The Helmet; design 1 p25]
Usernameunique
Goran tek-en, following request by Usernameunique