Accompanied by Patek Philippe Extract from the Archives confirming production of the present watch in 1908 and its subsequent sale on 16 January 1911. It furthermore states that the watch obtained a Geneva Observatory rating certificate.
According to the registers of the Geneva Observatory, the present watch participated at the 1910 timing contest where it achieved the mention "Honourable" with 693 points. It had been prepared and adjusted by the renowned precision adjuster C. Batifolier.
It is rare to find pocket watches by Patek Philippe with balance staff set with a diamond endstone instead of the more commonly used ruby endstone, a feature only found in movements of superior quality. The movement is furthermore fitted with a "Crausaz" compensation balance, lighter and smaller than the Guillaume balance, hence used in thin or complicated watches.