Unknown coins in poor condition-Help [résolu]

Hello
Very bad condition. Does anyone have any idea of a coat of arms in a circle, I can read just REX.
It was a mix of old Rome, but it certainly does not belong there. Anyone know the Erb of the rest of the coin.
Thank you for your help, but I think the odds are minimal.
Ivan
copper
15,5 mm
0,9 g
Thank you !

For me it looks like an Hungarian coin
The right picture looks like 'Patrona Ungaria' :
https://www.google.be/search?q=patrona+ungarie&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjCiN-R7NDZAhUSYVAKHcytA64Q_AUICigB&biw=1264&bih=685

Citation: "PetrusAscanus"​For me it looks like an Hungarian coin
​The right picture looks like 'Patrona Ungaria' :

​
​

​Hello
Thank you PetrusAscanus !
I'll try to look, maybe the coin will end up on a pile of undetected.

Ahoj

the big one in the middle looks spanish

Citation: "PetrusAscanus"​the big one in the middle looks spanish

​Hello
And thank you for your opinion
It's silver, 28 mm and weight is 6 g. I think it's more a thaller or something like that in the year 1500-1600
https://www.google.cz/search?q=thaler+rudolf+ii&rlz=1C1NHXL_csCZ684CZ685&source=lnms&tbm=isch&sa=X&ved=0ahUKEwivi66NtNLZAhVRbFAKHbE-C0cQ_AUICigB&biw=1366&bih=637


Thank you !
Sincerely, Ivan

Hello,

It's definitely Spanish, Petrus is right. The coats of arms are the spanish one with the cross of the spanish netherlands. The style of the portrait is from 16th century spain (Carolus V, Felipe II). I think it might be this one :
https://en.numista.com/catalogue/pieces94918.html

But for the first one i have no idea.

It looks more like this:
https://en.numista.com/catalogue/pieces94921.html

Citation: "Choucas"​Hello,
​
​It's definitely Spanish, Petrus is right. The coats of arms are the spanish one with the cross of the spanish netherlands. The style of the portrait is from 16th century spain (Carolus V, Felipe II). I think it might be this one :
​https://en.numista.com/catalogue/pieces94918.html
​
​But for the first one i have no idea.

​Hello
Thank you very much

Yes, I'll give it up, the similarity is here, the same letters "REX," overhead and "MIHI" under the coat of arms
I'm just surprised how he got to me with a bunch of other coins.

Thank you and I'll be searching! He almost finished on the scrap of history in a pile of scrap.Yes
Thank you Choucas, PetrusAscanus
Thank you Ivan

There are several possibilities.
The mint mark in mostly under the bust.
At the right of the bust you should find the region for the coin.
Your coin is very worn, but perhaps you can find out with province it is
Brabant: https://en.numista.com/catalogue/pieces94921.html
Overijssel : https://en.numista.com/catalogue/pieces94918.html
Gelderland : https://en.numista.com/catalogue/pieces107289.html
Flanders : https://en.numista.com/catalogue/pieces94919.html
And perhaps the other provinces have also these coins