This beautifully carved scraper, missing its wedge-shaped stone blade, has an ergonomic shape that fits a (small) right-hand perfectly when held. Scrapers such as this were used for dressing hides by scraping the fat and flesh from the inside of a skin.
It has carefully formed grooves for the thumb and fingers and a slot to take a stone blade. It was shaped to fit the hand of the woman who used it.
The number 601 (or 109) in white ink is written on its flat base.
Reference: For similar examples, see "Indian & Eskimo Artifacts of North America", Charles Miles, pp.101 American Museum of Natural History, catalog No: 60 / 1523, collected in 1899.