Found keys in Prospect Park 7/11

Guess its my turn to find the keys.

If you lost keys in Prospect Park recently, tell me how many, where you may have lost them, what they look like etc. and the unique thing about one of them.

Found another set of keys today in the Park. CL post: http://newyork.craigslist.org/brk/laf/3167184537.html

Original set from 7/11 still not claimed: http://newyork.craigslist.org/brk/laf/3132381298.html