There's a bunch on eBay...
llowry61, I don't have any knowledge regarding potential value. I've never bought and sold and don't follow anything in the market. My interest has always been personal and I enjoy being outdoors. In years past I have done presentations for public schools and home school groups.There is a guy on you tube who does what he calls mud larking on the banks of the Ohio River.
He shovels rocks into a small basket, and he then cleans the mud off somewhat like a gold mining sluicing concept. Once the mud is removed from the rocks he picks through them for arrow heads. All it takes is elbow grease a shovel a canoe, kayak or small john boat.
He recommended choosing a spot with steep banks or where there is a drainage coming into the river. He said the erosion over thousands of years actually moves the artifacts to the riverbank.
Doubt you would find one of those ax heads, but he found tons of broken arrowheads and a couple of really nice ones.
Are they very valuable? I know they are valuable in terms of historical but curious about how expensive they might be to purchase.
Charlie, how about a pic of the 6" spear point from Mississippi Island? And, why do you think it probably came from South America?
(Looking up Mississippi Island on Google Maps, I find Mississippi islands, a bunch of them in the Gulf off Alabama, or various islands along the length of the Mississippi.... Where did you make your find?))
Don't archeologists use spearpoint styles as indicators of Native Americans arrival in the Western Hemisphere? E.g. Clovis? I have sort of a vague memory of reading that....