Omara circa 1940 A set of six early to mid-20th century Iraqi silver and niello napkin rings

Set of six early to mid-20th century Iraqi silver and niello napkin rings from Omara, each oval form with niello decoration depicting scenes of Great Pyramids of Giza, Tomb of Zubaida, Taq Kasra ruins, date palm trees, boatman in mashoof and dhow sailing boats, unsigned, weight 122g.