\"Beso las manos a vuestra merced\". Sellos y marcas en la correspondencia de Simón Ruiz, in SIMÓN RUIZ: mercader, banquero y fundador. A. Sánchez del Barrio (ed.), Fundación Museo de las Ferias, Valladolid, 2016, pp. 151-161

In 2015 the review of the entire Archive Simon Ruiz began before transferring to the Fundación Museo de las Ferias, in Medina del Campo. One of the activities carried out during the review of the more than 56.000 letters sent to Simon Ruiz is the registration of trade marks and stamps that appear on them in order to develop an inventory of the two constituent elements of identity: the name and your sign. This paper is a foretaste of the work we are doing.