Don Anselmo Seijó was a renowned collector at the end of the 19th and early 20th century. His most important grant to the philately of Uruguay was the find of the “Piñeiro Archive”. In the 19th century a controversy arose concerning the genuineness of the Diligencia second type issue. The Belgian dealer Jean-Baptiste Moens, supported by other chroniclers in Europe, had doubts about the official nature of the 60c second type issue, and challenged the theories of the Uruguay collectors Dr Esteban Wonner
