Lot comprising four books: - ALONSO LUENGO, L., El reloj de la puerta del sol. Comunidad de Madrid, 1990. - SALES (José Vicente) and ALBALAR (José Manuel) Los relojes torre. El tiempo colectivo en la Comunidad Valenciana, Valencia, Gremio Artesano de Relojeros de Valencia, 1997. - Lippincott, Kristen, El tiempo a través del tiempo, Editorial: Grijalbo Mondadori, Barcelona, 2000. - MORENO, R., José Rodriguez de Losada, Vida y obra, ed. Fundacion Juanelo Turriano, Madrid, 1995. Sizes: 29.5 x 22.5 x 2.5 cm; 28.5 x 22.5 x 3 cm; 29.5 x 25 x 2.5 cm; 18 x 13 x 2 cm. Set of four books specialising in different artistic disciplines. The books belong to the personal collection of Don Juan José Ontalva (Chinchón, 1930- Madrid, 2019), a famous watchmaker from Madrid, descendant of several family generations dedicated to the world of watches. During his career he achieved a high degree of precision and skill, becoming the master of other watchmakers. He is currently recognised for numerous works, including the commissioning and restoration of the Billeter astronomical clock, located in the Congress of Deputies.