"THE SPHINX (1954) Yatch 1/50 scale radio-controlled sailing model (missing batteries and radio control components) L. 127 cm - H. 45 cm Yacht liner generally designated as the Royal Yacht of the Netherlands Attached a Navig plan with "La Source des Inventions" stamp Reference: MRB magazine ("Le modèle réduit de bateaux"), assembly article and navigation test in magazine n°405, August 1997