This was a helpful thread to me, because even though I have seen a lot of Navajo beads, and have a couple strings, I still struggle figuring them out sometimes. And yes, we need your pics 
How exciting that you get to head back out there soon! Hopefully you will share with us your purchases 
I would like to add that in the thread I linked I posted a couple of mine, and I now believe they both are handmade. When I looked with a magnifying glass I was able to find file small file marks all around the seams. That is something that has been helpful to me. But we are looking forward to seeing your Navajo beads!