An Aboriginal stone mortar / grinding stone

An Aboriginal stone mortar / grinding stone
Lachlan River, New South Wales, Australia
both sides with a central depression within a wider depression, inscribed From A. S. Kenyon, October 1942 Found at Booligal (in the dingo's hole) LACHLAM (sic) RIVER N.S.W.,
15cm wide, 7.5cm high,
an Aboriginal stone axe head, with an inscribed label from CROW'S NEST near TOOWOOMBA West of Brisbane Qld 1941. Rec. from P.E.Worms 1943, 8cm long, and an Aboriginal stone axe head, inscribed NIRRAMA, on the lower Fitzroy river, KIMBERLEY, N.W.Aust., 12.2cm long. (3)

Provenance
Dr Leonard Adam Private Collection (1891 - 1960) Anthropologist and lawyer.