5 Fascinating Facts About Ravens Farmers' Almanac Plan Your Day Common raven FWS.gov Raven Free Stock Photo Public Domain Pictures RAVEN SKULL ON CHAIN. The Raven.. bearer of bad omen, messenger of Odin. The great black bird is represented here in a detailed raven skull made in polished pewter with mystical etchings on the head. Comes on a sturdy 21" chain. Approximate Dimensions: H: 57mm (2. 24") W: 26mm (1. 02") D: 16mm (0. 63") Weight: 49g (1. 73oz)Chain: On a 21" (53cm) curb chain plus a 1 " extender chain. Materials: Pewter