Paper covers, 87 pages, 100 figs and 8 plates of line illustrations, plus 7 full page adverts for Excelsior Park, Ulysses Nardin, Leonidas, C H Meylan, Audemars Piguet, Leon Breitling and Longines. French text translated from the original German by G-A Berner. Nouvelle (3rd) edition, Bienne, 1930.
Invaluable information for anyone with an interest in and/or who works with complicated watches.
In good clean condition, the pages with just light age toning at the edges.