Claude Monet’s 'Marée basse aux Petites-Dalles; from 1884 is from the collects ion of Mamdouha and Elmer Bobst. It is a key highlight of Replica Shoes ’s Impressionist & Modern Art Evening sale on 9 May in New York. Works from the collects ion will be sold to benefit the causes the couple supported during their lifet.mes s including New York University, Memorial Sloan Kettering Cancer Center and Princeton University.