Lost Helmet--Toulumne top of OZ

I took off my helmet at the top of OZ (7/30) and shoved off for the descent without it.  It's a white Petzl (I think, maybe a BD???) with one of those knobs in the back to adjust the head strap.    Would appreciate a text if you are in the South Bay/ Peninsula area. Thanks a bunch !!  Geoff 650-919-3553