The name “Chronomètre Royal” was registered in Switzerland on May 28, 1907, under the No. 22 193. The “Royal Chronometer” name, for the English-speaking market, was registered in Switzerland on May 8 1908, under the number 23 872. The first of these were a series of pocket watches delivered to Brazil. A certain A. Campos, one of Vacheron & Constantin’s agents, had organized a lottery system in which subscribers would pay a monthly fee to take part in a series of draws. The holders of the winning tickets would be given a watch and the other subscribers would be entered into the next draw. This system proved to be so successful that A. Campos delivered a total of 3 022 watches between October 22, 1907 and December 31, 1911 - an amazing 80% of the production of the Chronomètre Royal, utilising the Cal. RA 22’73 made during this period. The Chronomètre Royal was made in several sizes, from 12 to 22 lines, and was housed mostly in gold cases, and rarely in silver ones.