I have spent many hours searching the internet trying to find out what these unusual shaped mother of pearl items would be used for…with no luck. I thought perhaps they were some sort of collar stay but I can find no evidence of that. They measure just under an inch by approximately 3/4 of an inch. Two of the five are similar, they other three are different. Two lay perfectly flat and three have a slight arch.
Does anyone know what they are? What would they be used for?