He was only twenty years old when he took over the operations of the Château Mouton Rothschild vineyards and two years later, in 1924, came up with the unheard of idea of bottling the entire vintage at the Château, an idea that other producers of Premier Cru wines soon copied. Previously, vineyards sold their wines in bulk, leaving the maturing, bottling, labeling and marketing to be handled by the wine merchants. Philippe de Rothschild's idea was to maintain control over the quality of his product and allow marketing of the brand name. Two years later, he developed a "de facto" price-fixing arrangement among other top Bordeaux producers.