It may be something like this N#87662
I cannot tell which emperor but if you search up “spearing” in the catalogue under roman coins you will find different types with the same reverse as your coin.
https://en.numista.com/catalogue/index.php?e=rome&r=spearing&ct=coin&im1=&im2=&tb=y&tc=y&tn=y&tp=y&tt=y&cat=y&ru=&ca=3&no=&v=&i=&b=&d=&u=&a=&dg=&m=&f=&t=&w=&mt=&g=&se=&c=&wi=&sw= ;
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