This type of object was used to collect fat from walrus and seal intestines.
According to Allen Wardwell1, scrapers from the Okvik period were decorated with simple geometric motifs like this one.
For similar models see :
Fitzhugh et al. Gifts from the Ancestors: Ancient Ivories of Bering Strait,
Princeton: Princeton University Art Museum, Yale University Press, 2009, pg. 131, pl. 10
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1- Allen Wardwell, Ancient Eskimo Ivories of the Bering Strait,
New York: Hudson Hills Press, 1986, pp. 50/51
Price: €1,700