No Image Lot 804 Omega Workshops Plaster relief plaque, circa 1915 the design attributed to Duncan Grant stamped with 804Omega Workshops Plaster relief plaque, circa 1915 the design attributed to Duncan Grant stamped with Mallams Omega Workshops Plaster relief plaque, circa 1915 the design attributed to Duncan Grant stamped with Omega cypher and 'D.GRANT', 'Omega Worksh... Add to watchlist Live