Nero Sestertius Authentic?

34mm , 25.8gm

Edit: Response from Curtis Clay on the discussion board:
"unfortunately it's a modern fake in my eyes, because the details of the arch are impossibly clumsy and often simply wrong. Look for example at the ear length of the horses in the quadriga, or the large figure on the side panel at left, who should be a naked but helmeted Mars, holding spear in r. hand and shield in left.

In my opinion it has to be a struck piece from modern dies. The patination is quite deceptive, however, especially on the obverse.

Yours,

Curtis "

After Mr. Clay's assesment, I found a die match for this coin in EF condition being sold as a reproduction. Aparently this is a modern struck reproduction that has been artificially aged.