Rounded rectangular case with hinged lid featuring a polychrome enamel depicting a nude nymph or female sprite with small transparent wings and gauzy drapery over her midsection, sitting on a grassy bank with calm body of water to left as she looks at a yellow butterfly perched on her left forefinger; softly focused backdrop of blues, greens and purples. Concave back is engraved "GBB" in conjoined script. Pin closure with two tabs at opposite ends of lid and back. Gold washed interior has a removable retainer stamped "STERLING" on reverse. Bottom inside edge of back is struck incuse with Gorham trademark (lion passant facing right, anchor, and gothic or Old English "G"), "STERLING" in sans serif letters, "190" and date mark of a double hemisphere world map; inside lid and back are both stamped "191" next to hinge.