Roman coin 364 – 378 Valens [opgelost]

I have been searching for exact coin on internet for a long time. They are a lot of similar coins, but they are all different in some minor details.

Where can I find a picture of exact coin and what should be a value of it, based on condition of it.

Specifications:

weight: 2grams
diameter. 1,5 x 1,5 cm
metal: cooper or bronze (cant be sure)

Regards

Hello and welcome on Numista !
It's indeed a nummus of the emperor Valens : "[D N VALEN]-S P F AVG"

[G]LORIA RO-[M]ANO[RVM] reverse type (emperor with captive) with no elements in the fields.
Unfortunately I can't read the different of the mintmark in exergue on this coin, but, regarding the style, I had say it was minted in he Balkans : Siscia, Thessalonica or even Heraclea.

Few examples here :
https://www.nummus-bible-database.com/monnaie-63521.htm
https://www.nummus-bible-database.com/monnaie-50453.htm
https://www.nummus-bible-database.com/monnaie-48354.htm

Thank you so much Cycnos, yes it definetly maches with the 3rd one, forged in Siscia (Sisek). I can tell by the face on the 2nd photo and also by the string position on the back of his head at 1st pic.

The mint is only 200km from.

regards