Greek owl old ATHENS silver AOE Cufflinks 449-413 BC?

We bought these from a collector and we found this information on them. These are called tetradrachm (A silver coin among the ancient Greeks) and on the back is AOE signifying Athens in front with the owl which symbolizes wisdom on the back. The front has an early head of Athena? These were later made into cufflinks. From what I know, this is probably 460-450 BCE. The content of old Greek coins were made of precious metal, usually silver, equal in weight to the value of the denomination We saw one pendant ( I still have the web page) where it was priced at 2195.00 and it is already sold. I have no reserve on these. They are heavy and are 1" long. This is all the information I have on them so please use the web page as a comparison as to what these are. This is based on information from a collector and the web page as reference. I am selling these as cufflinks and not based on this information which is just for your information.