Pendant portraits of Maerten Soolmans and Oopjen Coppit by Eugène Fromentin in 1877 with the remark that they were examples of Rembrandt at his best and were painted in the same period that Rembrandt painted his "Anatomy Lesson of Dr. Nicolaes Tulp", traditionally marking the beginning of his career in Amsterdam. Clearly, the flamboyance of these young newlyweds did more to launch Rembrandt's career as a portrait painter for the Amsterdam upper class than his sober depiction of a class of serious students in Leiden. The entire Van Loon collection was sold to Rothschild for 40,000 pounds, which at the time was over a million francs. Wilhelm von
Dirck Tulp had been used for dying silk since 1603. The silk was imported from Persia, and shipped, either through Archangelsk or the Strait of Gibraltar. A pair of fashionable Flemish ladies had headed it, its activities occurring in its light and airy attics. Over the years, the operation was largely moved to the Jordaan. When Tulp and his wife began building-work in 1652, they had the building embellished with stucco and the floor laid with marble. The Kloveniersburgwal was an attractive site for the rich, being close to the nerve center of the VOC, in which Tulp was appointed as delegate.