I found my first 2013 half today in a box.
the mint started selling 2013 half in rolls and bags
on June 22. Just after 2 months they are showing up in boxes
Pretty neat. I also found one back on August 3rd. I still don't understand why the mint would make NIFC halves, why people would buy them, why people would then release them back into circulation after only a couple of weeks (I didn't know that they started selling them on June 22nd.
I've picked up 21 mint rolls of NIFCs this year and another 2001 mint roll. So far I've kept them because I feel bad bad dumping them, not because I think they have or will have value.