Larger arrowhead shaped Thunderbird earrings. This set is larger measuring 2 1/4" long and 1 1/2" wide. The affixed Thunderbird is a brassy metal - I would say that the base metal is copper although it could be brass as well.
They apparently were a designer brand but there is no stamp. That said they have these interesting Patent # tags on each one - see last photo. Personally I love patina finished jewelry - I love the craft - the old world feel to them.
Only set I have - never worn - mint condition. Beautiful - hope you love them too.