In 1822, Rottiers sold a second collection, of smaller importance, to the government. The best piece in this collection would later turn out to be a modern cast of a marble head, a forgery. With both the first and the second Rottiers collections, the origins would remain shady. In both cases it was hinted or outright claimed that Rottiers and his son had dug up at least part of the antiquities themselves. However, in both cases it would turn out that perhaps all of the collection was bought. Rottiers also repeatedly admitted to selling forgeries and misleading buyers, but told Reuvens that he would never do so to him and that his earlier mistakes were youthful folly.