Roman coin or medal ?

On behalf of another collector:

Dear
I am asking for your help in identifying these coins.
The coins or perhaps the medallions are in pretty bad shape, but there are plenty of details that can help with identification.
Both coins have the same illustration and dimensions, the material is very strange, either bronze or gold.
Coin#1 dimensions : 17.6mm in diameter; thickness 0.6 mm; weight 0.97g 

Coin#2 dimensions : diameter 17mm; thickness 1.1 mm; weight 1.52g (it's a coin where you can see two layers of material, as if the upper one started to be damaged-peeled).
On one side you can see a person's head, and on the other side a part of a circle with a circular print of the capital letter "I", at least that's how it looks to me. What do you think? Of course, I did not find anything similar on the Internet, nor in the available catalogs. I have found coins where Roman coins were close by.
Thanks in advance.

May be stuffed medal ?

dear

I find on internet same coin, they say it is sarmatian coin very rare, material gold.

is it possibile.

please somebody ansveted.

Thanks for your help

@ssremacki 

I agree with the sarmation part, but the gold part, not so much, it is probably a sarmation imitation of some Roman coin probably in lead or copper.

dear

here are similar images of Sarmatian coins with similar inscriptions. as you said, they are probably imitations of Roman coins, and instead of letters, the Sarmatians typed capital letters “I” as text. Does anyone know about Sarmatian coins or have more information on rarity and prices.

best wishes

my maybe sarmatian coin: