Caligula AE Sestertius coin worth?

Hello..i have this old Caligula coin..i think it is Brass Sestertius of Caligula..i'm not sure because on the back of the coin it has sticked some old glue or something(i don't know what it is)...but i can see the writing "IVLIA" that apears on the sestertius coins...i can get it off but i'm affraid to not ruin it..i had seen in auctions that are very valuable....can someone confirm this?..Thanks

 

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Modern reproduction, no value.

 

how do you know that is a reproduction?..i don't get it

 

Obvious signs of modern casting. Air bubbles galore. Do you see a seem on the middle of the edge?

stainless

 

From a Souvenir set probably glued to a cardboard piece identifying each. Appears to have been cast.