These are artifacts that were found on my father-in-laws farm in MO., and, I suspect they were made by the Blackfeet Indians, as this was their land for thousands of years.
Excellent point and, I agree completely. These were collected over a 30 yr ago, with many found back in the 40’s and 50’s.
None are from a grave~! All were located on top of a hill overlooking a river, turned over by farming activities. Clearly a camp site.