Need Identification [solved]

I was giving this coin, but have had no luck trying to identify it.

It is late Roman, about 400 AD, but I will let the specialists identify the ruler.

I cant really read much of the legend but this one comes really close: http://www.wildwinds.com/coins/ric/theodosius_I/_siscia_RIC_039b.1.jpg

Alfonz, from looking at my coin closely, this does look like a match. Thank you. So, who would be the ruler? Sorry, this is my 1st ancient coin ever.

The legend looks like

D N VALENTINIANVS AVG

So I would say Valentinian II as co-ruler with Valens and Gratian, or Gratian and Theodosius. Why do I say that? Because on the reverse you can read AVGGG = 3 Augusti (i.e. emperors).

The mint, I think, is SIScia.