A RUSSIAN GOLD AND GUILLOCHE ENAMEL EGG PENDANT, WORKMASTER AUGUST FREDRIK HOLLMING, ST. PETERSBURG, 1899-1904 the sapphire-blue guilloche enamel body with a foliate band, marked with 56 standard, assayer's mark Ya L in Cyrillic for Yakov Nikolaevich Lyapunov, workmaster's mark A.H in Latin for August Frederik Hollming; length including loop: 2.5 cm (1 in.); weight: 5.5 g (0.175 ozt)PROVENANCEPrivate American collection