“Of rectangular form with rounded corners, overall enamelled in translucent pale green enamel over guilloché sunburst ground, each side incorporating twenty-six flies set with diamonds and rubies, with gold-mounted cabochon ruby pushpiece, engraved inside, 'Quinze années de bonheur', fully marked, 8.5 cm. long. By Hahn and with the workmaster's mark of Carl Blank, St. Petersburg, circa 1896.”












