A rare pair of Yoruba, West African ivory 'Iroke Ifa' (Divination Tappers), each fashioned from elephant tusks, the main section of tusk reduced to display the unusual and attractive 'graining', the proximal end of each finished as a deep collar engraved with a trellis pattern and with encircling carved bands. Provenance: Bewley Court Lacock Wiltshire; home of Oliver Ford, decorator to the Queen, working at Clarence House, The Dorchester Hotel and Burlington. Ex. the Smithsonian Institute, New York. One with damage to collar. Length 70 cm and 76 cm