Anyway the amounts we are talking about here, I think is reasonable harmless and of no interest to the authorities.
The amount is of no interest, but the information that you have potentially undeclared accounts abroad is.
I have no intention to pay Argentina a yearly tax for having to keep my savings away from their draconian and unreliable banking system, especially if these are savings from my work done abroad before even moving to Argentina, on which I was already taxed abroad.