It was brought up on another thread about the size and if it could be used to kill game. These point were lethal and small and lite, which they need to be for flight from a bow. Here is a couple of picks from PF's of points that are around the size of a penny.
A couple of trays of true Arrowpoints from my area. All personal finds.
The first tray is mostly small Triangle Points all from the same site, a Ft Ancient Village in Greenup county Ky.
The others are some of the best Birdpoints I have found over the years in my area. The bulk of these came fro a spot we referred to as "The Birdpoint Mound" which was a small rise in the middle of the field that had lots of small pea gravel all over it and these small Points were everywhere on the rise.