I'd wear a strand of those. My skin would polish them- Unless they are calcium leached and fragile. (not kidding)
"yeah, $1 each is about right, send them on over". Signed Octavia. (sorry gg, but she blackberried Pearl Dragon. We/oops, I mean "they" are conspiring to get them!)
Just kidding. What does the friend want to sell them for? How would you do it? By the weight of the lot? Those kind of pearls are sold by the carat, I would guess. I love that old glass iridescent thing they have. They are still alive.
Those are native beads, the trade beads are less commercial, more historical, but the native beads might be restored a little and worn too. (I am terrible I have some Chimu Peruvian beads from just before the Conquest). See first two pictures.They are very plentiful and found in many buried sites as well as grave goods. The locals are also making imitation chimu beads from new spondalous shell spines (known as "originales" and they are great. I have some of those too.
The bottom pic shows a turquoise necklace then the ancient strand, then the modern Chimu beads, then on the outside Navajo drilled coral and a mix of old and new beads. It is the center 2 I am putting that pic up for. The big shell bead on the modern necklace is an ancient bead too.
I wore the ancient beads against my skin and they polished right up, lost their dryness. see 2nd pic.