Set of four books: -BRUTON, E., The history of clocks and Watches, Ed. Orbis, 1989. -JAGGER, C., The World`s Great Clock & watches. Ed. The Hamlyn Publishing Group Limited, 1977. -HAWKINS, J.R., Thomas Cole & Victorian clock making, Ed. Australia Privately, 1975. -AA.VV., Clocks and Watches: The Collection of the Worshipful Company of Clockmakers. Sotheby Parke Bernet Pubns, 1975. They show marks of use. Sizes: 30 x 22 x 2.5 cm; 29.5 x 23 x 3 cm; 28.5 x 22.5 x 2.5 x 2 cm; 28 x 21.5 x 2 cm. Set of four books specialising in watches. 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.