Need help valuing this Spanish 10 cent if possible thank you, no date visible

Someone put in the acid or was a year in a parking lot.

In this state of conservation it is worth nothing

Totally agree with Geison

In this worn state, it is worth nothing anymore, not even its initial value of 10 eurocents

Hi and thank you for your replies. I should add we've had the coin since 2010 and its always looked like this, it's in a collection of other Spanish 10 cent ‘errors’ or oddities that we have, we assumed it was a strike issue of some sort but thank you for clarifying

All PMD (Post Mint Damages).