65 Fastback Gainesville FL - How can I tell if my Styled Steel Wheels are Original, as in Made in 1965?

Hi all, I found your forum while searching this question; and after spending much time searching, I have come up empty. How can I tell if my SS Wheels are Original, as in Made in 1965? Is there an identifier, original markings or code? It would be great if I could obtain this information today, 1-31-19.

Thank you very much! I have owned 65 or 66 Mustangs my entire driving life, 1985 on, and with my own money (i.e., I'm not a rich kid)! :)
 
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