Howdy folks! I recently got a thie Roman Coin from a local shop. Its obviously a Sestertius of Philip II but i cant explain the silver color. Is this a strange toning or maybe someone trying to pass it off as something else? Any answers would be appreciated. Thanks!
Specifications: 20.4 g. 28.7 mm
https://www.kenom.de/objekt/record_DE-MUS-062622_kenom_158415/2/


I believe the inside of the coin is bronze