Cartier Decò watch

in platinum and diamond roses suspended from a châtelaine in platinum, black onyx and diamond roses, 27x27 carré case, ref. 5306-4185- 7344, guilloche dial with Roman numerals, signs of wear, mechanical movement with manual winding Reference Literature: Jader Barrracca, Giampiero Negretti, Franco Mencini, Publi Prom, Le Temps de Cartier, Milano,1989, pag. 92-93