Well - I don't know what this shape is. Puffy sailor pants with a tab. A Devil mask with only one horn? I'm sure the horn was meant to slot into something - but no idea what. These feel a little oil - probably to prevent tarnish. You'll want to scrub them first with detergent.
Metal components from a vintage warehouse sale - these were probably produced as custom items for a well-known fashion jewelry house, and these would be end of line when production changed. Lot of creative possibilities here!
31mm x 42mm x 1mm By the each.