The reference 4467 is known as the first "Datejust" ever made (despite not being signed on the dial, this would be corrected by the firm starting from reference 6105). Featuring a chronometer movement, the first automatic wristwatch with a date and a waterproof case, the first ever 100 examples produced (such as this example) were available only by responding to an advertisement in the newspaper "La Suisse" at a cost of CHF 975. The owners could order either their coat of arms (such as this example and similar to the watch owned by Winston Churchill) or their initials and were all numbered from 1 to 100 between the lugs (No. 046). This is only the fourth known "souscription" example ever to appear on the market and has retained its original dial, crown, bezel making this 46th Datejust ever made a significant watch for any collector.