Shoshone Arrowhead

Very cool, looks like a "bitterroot side notched" they tend to date to 6,500-7,500 b.p. (Yeah, it's THAT old!! ) sadly even ancient arrowheads are still very plentiful and aren't generally worth much at all, I would guess $20-30 tops.

I live in Idaho too, in boise, I go arrowhead hunting near mtn. Home all the time. Just be careful about where you pick these things up, it is only legal to collect them from private land with permission from the landowner, there are heavy fines and even potentially jail time for picking these up on public land!!