Can someone identify this?

looks like a plunging router bit .

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

Could it be a plunging flush trim bit? Is there such a thing? Look at page 5 of the Whiteside catalog, left side, halfway down.

Edit: actually, it looks more like what Whiteside calls a “panel bit”. Page 10, upper right. My question is, what are these for?

-- "A man may conduct himself well in both adversity and good fortune, but if you want to test his character, give him power." - Abraham Lincoln

Thanks so much, guys!
It does look like the Whiteside panel bit, something probably purchased years ago and completely forgotten living in the bottom of a toolbox drawer. It had me worried because it was on the floor next to my planer. Whew! Now I only have to wonder what he was using it for.

picking his teeth ,
or his ears .

it depends on how far back in the mountains you live (LOL) !

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

Probably both… and not necessarily in that order. LOL

what this bit is mainly for or at least what I see it used for is cutting out a window or such, they put up a sheet of plywood and cover everything then come back and plunge it in and go inside the frame in stead of cutting it out before hand

-- Randy I have the right to remain silent, just not the ability ; )