Grapes - what did I just eat?

[Eggo]

These were the best grapes I ever had and was not like anything I had before. Mind you I've really only had grapes from the supermarkets.  But this was amazing. It was not just sweet and juicy but the texture was the best part. It was the firmest crispiest grape I had, the skin you would not even know it's there. I picked this up at our local Hispanic chain super supermarket. It looks like it's from Peru.  Anyone know what variety this is?  Thanks!

[1rainman]

Probably autumn crisp. It's fall there.

[Eggo]

Thanks Rainman!