can't find file for icon

[Jack Ostroff via KMyMoney-devel]

I'm capturing a new full set of screenshots for the manual, and I'm  
stuck on the icon for Outbox View.  I have not been able to find it  
under /usr/share/icons, where I've so far found all the other icons  
I've looked for.  I've attached a screenshot from running KDE, but I am  
looking for the actual png or svg file used in the View Selector.

Thanks for any pointer or thoughts on where I forgot to look.
Jack