Size 7 1/2, hand made silver ring with abalone eye. Sea otter furs are thick and rich. Traders hunted them to the verge of extinction. They are often depicted floating on the backs.
Repoussé is used to shape a piece of metal by working on the reverse of the metal with small hammers to form a raised design on the front. Chasing is is the opposite technique used to refine the design on the front of the work by hammering to sink the metal.