Ancient roman coin from BC era. Unidentified and it is NOT bronze.

[Brianbarr88]

Hi, I inherited this coin from my grandfather.
I took it in to a specialist and he told me that the coin is VERY soft
He's opinion on it is there is a precious metal in it.
Everyone on here is saying it's bronze. I have had three ppl look at it and
They are saying it feels like gold or maybe some other precious metal.
The weight and softness are very odd considering this coin is very old and they didn't have palladium rhodium or platinum at the time. Or so people think. But who really knows?
Take a look.. I can't find ANYTHING on the internet that is identical. Not at all.
The coin has an S and a C on the back side. And if you look at the face of the coin and check his neck line it might help.
What's it worth.? Even if it turns out to be bronZe or brass(which it may be) but it's super soft as I said. U can easily scratch the sides on something ruff like porcelain that's not glossed it leaves behind a gold looking layer .
Check it out........

 

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[Brianbarr88]

 

[Fitzwilk]

Roman Imperial Sestertius of the Roman Emperor Antoninus Pius.
Obverse: ANTONINVSAVGPIVSPPIMPII - Laureate head right.
Reverse: LIBERTASCOSIIII - Libertas standing left, holding pileus and scepter; S C across fields.
Struck c. 154-155 A.D. at the mint in Rome. Typically struck from Orichalcum, a brassy alloy.
Reference: RIC 929, BMC 1963, C 543

 

[Calgarychef]

Now that's an answer!

 

[Brianbarr88]

Roman Imperial Sestertius of the Roman Emperor Antoninus Pius.
Obverse: ANTONINVSAVGPIVSPPIMPII - Laureate head right.
Reverse: LIBERTASCOSIIII - Libertas standing left, holding pileus and scepter; S C across fields.
Struck c. 154-155 A.D. at the mint in Rome. Typically struck from Orichalcum, a brassy alloy.
Reference: RIC 929, BMC 1963, C 543

Fitzwilk,
I had this retested and it came back 8kt gold.
Turns out my friends expert also claims its from the BC era and that it belonged to one of the "kingdoms". I guess they only made the bronze ones for the public? Aparently this is something that was for richer people only, particually for people inside the kingdoms.
Pretty cool huh? I'm just wondering if you could pull one up that's similar. They say they made gold versions of these but I'm unable to find it online. A lot of Poole pointed me to the antoninus pius because it was ruled out as bronze. But it's not bronze, like I said I had it tested and it's 8kt gold. Idk what other metal alloys it's made with but its gold.
Thanks.

 

[Fitzwilk]

Brian, Do you know how it was tested? I would be hesitant to trust any test performed other than a professional spectral analysis. It can't possibly be from the BC era as the portrait on your coin is definitely that of Antoninus Pius, c. 155 A.D. Regards...

 

[Mackaydon]

Fitzwilk;
Great ID !!
Don...