11. Christie's will not reveal the name, vocation or country of the consignor . 12. Weigman noted that Sotheby's requires consignors to guarantee that they have clear title. 13. "It's a dispute between the consignor and the academy ." 14. The consignor retains title to the goods. 15. In some cases, consignors may not have notified the tribes who are claiming the items. 16. Auction officials said they spent numerous lunches and dinners persuading consignors to accept the lower estimates. 17. They are complemented by movement documents supplied by consignors that are used for identification and tracking. 18. Neither Sotheby's nor Christie's would say only that they do not comment on consignors . 19. Sotheby's found the original owners and put them in touch with the lawyers for the consignors . 20. Consignors include Donald Fisher, S . I . Newhouse and the heirs of the French industrialist Auguste Pellerin.
