1827 coin from Argentina

Hi I have a coin that is from 1827, argentina.
it says Banco Nacional Buenos (probably says aires after cant see clearly...) and 40 something in the middle.
On the back side it seems to be an eaglet or something and it says ardescit... something it looks like.

couldn't find it on search, cant upload pic since I cant connect my phone to my computer anymore... any ideas what it is and what it could be worth? (kinda bad shape)

Hello,

is it this that you have?

https://en.numista.com/catalogue/pieces26204.html

It might not be on here yet as Buenos Aires section is relatively new I think. Can we see a picture of both sides?

 As some of the lettering is hard to read, perhaps the 40 is a 10 number? May be a 10 decimos coin ...



  There is >   KM# 4   Argentina / Buenos Aires   10 Decimos   1827-1830   Copper
 Obverse: Denomination within small circle within wreath   Reverse: Eagle within inner circle

  Welcome to the site, Erxza. I have added it now, if it is your coin ...
https://en.numista.com/catalogue/pieces30102.html

Posted by ZacUK on 19-Feb-2012, 12:17AM

 As some of the lettering is hard to read, perhaps the 40 is a 10 number? May be a 10 decimos coin ...



  There is >   KM# 4   Argentina / Buenos Aires   10 Decimos   1827-1830   Copper
 Obverse: Denomination within small circle within wreath   Reverse: Eagle within inner circle

  Welcome to the site, Erxza. I have added it now, if it is your coin ...
https://en.numista.com/catalogue/pieces30102.html

That one it is, it says 40 on the backside thx :D

Edit: Maybe is says 10 instead of 40, hard to see... but since everything else is right I guess my eyes fooled me :P