(1974ca). Artist proof made by Jose Luis Su\u00e1rez on cardboard sheet and in pencil on the back of a 1000 Pesetas banknote dedicated to Antonio C\u00e1novas de Castillo (inscription at the bottom of the presentation card), which depicts the Puerta del Sol of the Cathedral M\u00e1laga (city of the illustrious politician, key piece in the Bourbon restoration) (the Edifil specialized catalog of the year 2017 shows on page 174 a proof of the obverse, with the same art and with the numbering NE70P, this proof of the reverse is complemented by the cataloged). Spectacular and unique piece.