Tattersalls, Newmarket. Seal of Approval beats Belle de Crecy at Ascot. As the Tattersalls Autumn 2013 Yearling sales look good as the 3rd book posts a 38% increase over last year, with a 27% average increase per horse. Belle de Crecy is due to be sold at Tattersalls December Mare Sale. Whilst promising Royal Diamond heads for the Horses in Training sale. Tattersalls Image.